427 lines
13 KiB
C#
427 lines
13 KiB
C#
//
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// System.IO.Directory.cs
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//
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// Authors:
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// Jim Richardson (develop@wtfo-guru.com)
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// Miguel de Icaza (miguel@ximian.com)
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// Dan Lewis (dihlewis@yahoo.co.uk)
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// Eduardo Garcia (kiwnix@yahoo.es)
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// Ville Palo (vi64pa@kolumbus.fi)
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//
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// Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved
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// Copyright (C) 2002 Ximian, Inc.
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//
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// Created: Monday, August 13, 2001
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//
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//------------------------------------------------------------------------------
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//
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// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Collections;
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using System.Collections.Generic;
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using System.Security;
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using System.Security.Permissions;
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using System.Text;
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using System.Runtime.InteropServices;
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using System.Security.AccessControl;
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namespace System.IO
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{
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public static partial class Directory
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{
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public static string GetDirectoryRoot (string path)
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{
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Path.Validate (path);
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SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
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// FIXME nice hack but that does not work under windows
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return new String(Path.DirectorySeparatorChar, 1);
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}
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public static DirectoryInfo CreateDirectory (string path)
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{
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if (path == null)
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throw new ArgumentNullException ("path");
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if (path.Length == 0)
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throw new ArgumentException ("Path is empty");
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if (path.IndexOfAny (Path.InvalidPathChars) != -1)
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throw new ArgumentException ("Path contains invalid chars");
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if (path.Trim ().Length == 0)
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throw new ArgumentException ("Only blank characters in path");
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// after validations but before File.Exists to avoid an oracle
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SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
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if (File.Exists(path))
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throw new IOException ("Cannot create " + path + " because a file with the same name already exists.");
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if (Environment.IsRunningOnWindows && path == ":")
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throw new ArgumentException ("Only ':' In path");
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return CreateDirectoriesInternal (path);
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}
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[MonoLimitation ("DirectorySecurity not implemented")]
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public static DirectoryInfo CreateDirectory (string path, DirectorySecurity directorySecurity)
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{
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return(CreateDirectory (path));
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}
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static DirectoryInfo CreateDirectoriesInternal (string path)
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{
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#if !MOBILE
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if (SecurityManager.SecurityEnabled) {
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new FileIOPermission (FileIOPermissionAccess.Read | FileIOPermissionAccess.Write, path).Demand ();
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}
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#endif
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DirectoryInfo info = new DirectoryInfo (path, true);
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if (info.Parent != null && !info.Parent.Exists)
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info.Parent.Create ();
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MonoIOError error;
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if (!MonoIO.CreateDirectory (info.FullName, out error)) {
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// LAMESPEC: 1.1 and 1.2alpha allow CreateDirectory on a file path.
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// So CreateDirectory ("/tmp/somefile") will succeed if 'somefile' is
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// not a directory. However, 1.0 will throw an exception.
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// We behave like 1.0 here (emulating 1.1-like behavior is just a matter
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// of comparing error to ERROR_FILE_EXISTS, but it's lame to do:
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// DirectoryInfo di = Directory.CreateDirectory (something);
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// and having di.Exists return false afterwards.
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// I hope we don't break anyone's code, as they should be catching
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// the exception anyway.
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if (error != MonoIOError.ERROR_ALREADY_EXISTS &&
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error != MonoIOError.ERROR_FILE_EXISTS)
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throw MonoIO.GetException (path, error);
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}
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return info;
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}
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public static void Delete (string path)
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{
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Path.Validate (path);
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if (Environment.IsRunningOnWindows && path == ":")
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throw new NotSupportedException ("Only ':' In path");
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SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
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MonoIOError error;
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bool success;
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if (MonoIO.ExistsSymlink (path, out error)) {
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/* RemoveDirectory maps to rmdir()
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* which fails on symlinks (ENOTDIR)
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*/
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success = MonoIO.DeleteFile (path, out error);
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} else {
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success = MonoIO.RemoveDirectory (path, out error);
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}
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if (!success) {
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/*
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* FIXME:
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* In io-layer/io.c rmdir returns error_file_not_found if directory does not exist.
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* So maybe this could be handled somewhere else?
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*/
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if (error == MonoIOError.ERROR_FILE_NOT_FOUND) {
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if (File.Exists (path))
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throw new IOException ("Directory does not exist, but a file of the same name exists.");
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else
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throw new DirectoryNotFoundException ("Directory does not exist.");
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} else
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throw MonoIO.GetException (path, error);
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}
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}
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static void RecursiveDelete (string path)
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{
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MonoIOError error;
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foreach (string dir in GetDirectories (path)) {
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if (MonoIO.ExistsSymlink (dir, out error)) {
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MonoIO.DeleteFile (dir, out error);
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} else {
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RecursiveDelete (dir);
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}
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}
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foreach (string file in GetFiles (path))
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File.Delete (file);
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Directory.Delete (path);
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}
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public static void Delete (string path, bool recursive)
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{
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Path.Validate (path);
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SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
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if (recursive)
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RecursiveDelete (path);
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else
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Delete (path);
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}
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public static bool Exists (string path)
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{
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if (path == null)
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return false;
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// on Moonlight this does not throw but returns false
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if (!SecurityManager.CheckElevatedPermissions ())
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return false;
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string full_path;
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try {
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full_path = Path.GetFullPath (path);
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} catch {
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return false;
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}
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MonoIOError error;
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bool exists;
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exists = MonoIO.ExistsDirectory (full_path, out error);
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/* This should not throw exceptions */
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return exists;
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}
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public static DateTime GetLastAccessTime (string path)
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{
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return File.GetLastAccessTime (path);
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}
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public static DateTime GetLastAccessTimeUtc (string path)
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{
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return GetLastAccessTime (path).ToUniversalTime ();
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}
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public static DateTime GetLastWriteTime (string path)
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{
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return File.GetLastWriteTime (path);
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}
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public static DateTime GetLastWriteTimeUtc (string path)
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{
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return GetLastWriteTime (path).ToUniversalTime ();
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}
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public static DateTime GetCreationTime (string path)
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{
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return File.GetCreationTime (path);
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}
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public static DateTime GetCreationTimeUtc (string path)
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{
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return GetCreationTime (path).ToUniversalTime ();
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}
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public static string GetCurrentDirectory ()
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{
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SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
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string result = InsecureGetCurrentDirectory();
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#if !MOBILE
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if ((result != null) && (result.Length > 0) && SecurityManager.SecurityEnabled) {
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new FileIOPermission (FileIOPermissionAccess.PathDiscovery, result).Demand ();
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}
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#endif
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return result;
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}
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internal static string InsecureGetCurrentDirectory()
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{
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MonoIOError error;
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string result = MonoIO.GetCurrentDirectory(out error);
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if (error != MonoIOError.ERROR_SUCCESS)
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throw MonoIO.GetException(error);
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return result;
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}
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public static string[] GetLogicalDrives ()
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{
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return Environment.GetLogicalDrives ();
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}
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static bool IsRootDirectory (string path)
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{
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// Unix
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if (Path.DirectorySeparatorChar == '/' && path == "/")
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return true;
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// Windows
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if (Path.DirectorySeparatorChar == '\\')
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if (path.Length == 3 && path.EndsWith (":\\"))
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return true;
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return false;
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}
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public static DirectoryInfo GetParent (string path)
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{
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Path.Validate (path);
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// return null if the path is the root directory
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if (IsRootDirectory (path))
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return null;
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string parent_name = Path.GetDirectoryName (path);
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if (parent_name.Length == 0)
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parent_name = GetCurrentDirectory();
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return new DirectoryInfo (parent_name);
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}
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public static void Move (string sourceDirName, string destDirName)
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{
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if (sourceDirName == null)
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throw new ArgumentNullException ("sourceDirName");
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if (destDirName == null)
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throw new ArgumentNullException ("destDirName");
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if (sourceDirName.Trim ().Length == 0 || sourceDirName.IndexOfAny (Path.InvalidPathChars) != -1)
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throw new ArgumentException ("Invalid source directory name: " + sourceDirName, "sourceDirName");
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if (destDirName.Trim ().Length == 0 || destDirName.IndexOfAny (Path.InvalidPathChars) != -1)
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throw new ArgumentException ("Invalid target directory name: " + destDirName, "destDirName");
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if (sourceDirName == destDirName)
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throw new IOException ("Source and destination path must be different.");
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SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
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if (Exists (destDirName))
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throw new IOException (destDirName + " already exists.");
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if (!Exists (sourceDirName) && !File.Exists (sourceDirName))
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throw new DirectoryNotFoundException (sourceDirName + " does not exist");
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MonoIOError error;
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if (!MonoIO.MoveFile (sourceDirName, destDirName, out error))
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throw MonoIO.GetException (error);
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}
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public static void SetAccessControl (string path, DirectorySecurity directorySecurity)
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{
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if (null == directorySecurity)
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throw new ArgumentNullException ("directorySecurity");
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directorySecurity.PersistModifications (path);
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}
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public static void SetCreationTime (string path, DateTime creationTime)
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{
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File.SetCreationTime (path, creationTime);
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}
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public static void SetCreationTimeUtc (string path, DateTime creationTimeUtc)
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{
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SetCreationTime (path, creationTimeUtc.ToLocalTime ());
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}
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[SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
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public static void SetCurrentDirectory (string path)
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{
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if (path == null)
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throw new ArgumentNullException ("path");
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if (path.Trim ().Length == 0)
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throw new ArgumentException ("path string must not be an empty string or whitespace string");
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MonoIOError error;
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if (!Exists (path))
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throw new DirectoryNotFoundException ("Directory \"" +
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path + "\" not found.");
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MonoIO.SetCurrentDirectory (path, out error);
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if (error != MonoIOError.ERROR_SUCCESS)
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throw MonoIO.GetException (path, error);
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}
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public static void SetLastAccessTime (string path, DateTime lastAccessTime)
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{
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File.SetLastAccessTime (path, lastAccessTime);
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}
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public static void SetLastAccessTimeUtc (string path, DateTime lastAccessTimeUtc)
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{
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SetLastAccessTime (path, lastAccessTimeUtc.ToLocalTime ());
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}
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public static void SetLastWriteTime (string path, DateTime lastWriteTime)
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{
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File.SetLastWriteTime (path, lastWriteTime);
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}
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public static void SetLastWriteTimeUtc (string path, DateTime lastWriteTimeUtc)
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{
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SetLastWriteTime (path, lastWriteTimeUtc.ToLocalTime ());
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}
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public static DirectorySecurity GetAccessControl (string path, AccessControlSections includeSections)
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{
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return new DirectorySecurity (path, includeSections);
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}
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public static DirectorySecurity GetAccessControl (string path)
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{
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// AccessControlSections.Audit requires special permissions.
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return GetAccessControl (path,
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AccessControlSections.Owner |
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AccessControlSections.Group |
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AccessControlSections.Access);
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}
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#region Copied from reference source
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internal static String GetDemandDir(string fullPath, bool thisDirOnly)
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{
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String demandPath;
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if (thisDirOnly) {
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if (fullPath.EndsWith( Path.DirectorySeparatorChar )
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|| fullPath.EndsWith( Path.AltDirectorySeparatorChar ) )
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demandPath = fullPath + ".";
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else
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demandPath = fullPath + Path.DirectorySeparatorCharAsString + ".";
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}
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else {
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if (!(fullPath.EndsWith( Path.DirectorySeparatorChar )
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|| fullPath.EndsWith( Path.AltDirectorySeparatorChar )) )
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demandPath = fullPath + Path.DirectorySeparatorCharAsString;
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else
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demandPath = fullPath;
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}
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return demandPath;
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}
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#endregion
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}
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}
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