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//
// System.IO.Directory.cs
//
// Authors:
// Jim Richardson (develop@wtfo-guru.com)
// Miguel de Icaza (miguel@ximian.com)
// Dan Lewis (dihlewis@yahoo.co.uk)
// Eduardo Garcia (kiwnix@yahoo.es)
// Ville Palo (vi64pa@kolumbus.fi)
//
// Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved
// Copyright (C) 2002 Ximian, Inc.
//
// Created: Monday, August 13, 2001
//
//------------------------------------------------------------------------------
//
// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
using System.Collections.Generic;
using System.Security;
using System.Security.Permissions;
using System.Text;
using System.Runtime.InteropServices;
using System.Security.AccessControl;
namespace System.IO
{
[ComVisible (true)]
public static class Directory
{
public static DirectoryInfo CreateDirectory (string path)
{
if (path == null)
throw new ArgumentNullException ("path");
if (path.Length == 0)
throw new ArgumentException ("Path is empty");
if (path.IndexOfAny (Path.InvalidPathChars) != -1)
throw new ArgumentException ("Path contains invalid chars");
if (path.Trim ().Length == 0)
throw new ArgumentException ("Only blank characters in path");
// after validations but before File.Exists to avoid an oracle
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
if (File.Exists(path))
throw new IOException ("Cannot create " + path + " because a file with the same name already exists.");
// LAMESPEC: with .net 1.0 version this throw NotSupportedException and msdn says so too
// but v1.1 throws ArgumentException.
if (Environment.IsRunningOnWindows && path == ":")
throw new ArgumentException ("Only ':' In path");
return CreateDirectoriesInternal (path);
}
[MonoLimitation ("DirectorySecurity not implemented")]
public static DirectoryInfo CreateDirectory (string path, DirectorySecurity directorySecurity)
{
return(CreateDirectory (path));
}
static DirectoryInfo CreateDirectoriesInternal (string path)
{
#if !NET_2_1
if (SecurityManager.SecurityEnabled) {
new FileIOPermission (FileIOPermissionAccess.Read | FileIOPermissionAccess.Write, path).Demand ();
}
#endif
DirectoryInfo info = new DirectoryInfo (path, true);
if (info.Parent != null && !info.Parent.Exists)
info.Parent.Create ();
MonoIOError error;
if (!MonoIO.CreateDirectory (path, out error)) {
// LAMESPEC: 1.1 and 1.2alpha allow CreateDirectory on a file path.
// So CreateDirectory ("/tmp/somefile") will succeed if 'somefile' is
// not a directory. However, 1.0 will throw an exception.
// We behave like 1.0 here (emulating 1.1-like behavior is just a matter
// of comparing error to ERROR_FILE_EXISTS, but it's lame to do:
// DirectoryInfo di = Directory.CreateDirectory (something);
// and having di.Exists return false afterwards.
// I hope we don't break anyone's code, as they should be catching
// the exception anyway.
if (error != MonoIOError.ERROR_ALREADY_EXISTS &&
error != MonoIOError.ERROR_FILE_EXISTS)
throw MonoIO.GetException (path, error);
}
return info;
}
public static void Delete (string path)
{
Path.Validate (path);
if (Environment.IsRunningOnWindows && path == ":")
throw new NotSupportedException ("Only ':' In path");
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
MonoIOError error;
bool success;
if (MonoIO.ExistsSymlink (path, out error)) {
/* RemoveDirectory maps to rmdir()
* which fails on symlinks (ENOTDIR)
*/
success = MonoIO.DeleteFile (path, out error);
} else {
success = MonoIO.RemoveDirectory (path, out error);
}
if (!success) {
/*
* FIXME:
* In io-layer/io.c rmdir returns error_file_not_found if directory does not exists.
* So maybe this could be handled somewhere else?
*/
if (error == MonoIOError.ERROR_FILE_NOT_FOUND) {
if (File.Exists (path))
throw new IOException ("Directory does not exist, but a file of the same name exists.");
else
throw new DirectoryNotFoundException ("Directory does not exist.");
} else
throw MonoIO.GetException (path, error);
}
}
static void RecursiveDelete (string path)
{
MonoIOError error;
foreach (string dir in GetDirectories (path)) {
if (MonoIO.ExistsSymlink (dir, out error)) {
MonoIO.DeleteFile (dir, out error);
} else {
RecursiveDelete (dir);
}
}
foreach (string file in GetFiles (path))
File.Delete (file);
Directory.Delete (path);
}
public static void Delete (string path, bool recursive)
{
Path.Validate (path);
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
if (recursive)
RecursiveDelete (path);
else
Delete (path);
}
public static bool Exists (string path)
{
if (path == null)
return false;
// on Moonlight this does not throw but returns false
if (!SecurityManager.CheckElevatedPermissions ())
return false;
MonoIOError error;
bool exists;
exists = MonoIO.ExistsDirectory (path, out error);
/* This should not throw exceptions */
return exists;
}
public static DateTime GetLastAccessTime (string path)
{
return File.GetLastAccessTime (path);
}
public static DateTime GetLastAccessTimeUtc (string path)
{
return GetLastAccessTime (path).ToUniversalTime ();
}
public static DateTime GetLastWriteTime (string path)
{
return File.GetLastWriteTime (path);
}
public static DateTime GetLastWriteTimeUtc (string path)
{
return GetLastWriteTime (path).ToUniversalTime ();
}
public static DateTime GetCreationTime (string path)
{
return File.GetCreationTime (path);
}
public static DateTime GetCreationTimeUtc (string path)
{
return GetCreationTime (path).ToUniversalTime ();
}
public static string GetCurrentDirectory ()
{
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
string result = InsecureGetCurrentDirectory();
#if !NET_2_1
if ((result != null) && (result.Length > 0) && SecurityManager.SecurityEnabled) {
new FileIOPermission (FileIOPermissionAccess.PathDiscovery, result).Demand ();
}
#endif
return result;
}
internal static string InsecureGetCurrentDirectory()
{
MonoIOError error;
string result = MonoIO.GetCurrentDirectory(out error);
if (error != MonoIOError.ERROR_SUCCESS)
throw MonoIO.GetException(error);
return result;
}
public static string [] GetDirectories (string path)
{
return GetDirectories (path, "*");
}
public static string [] GetDirectories (string path, string searchPattern)
{
return GetFileSystemEntries (path, searchPattern, FileAttributes.Directory, FileAttributes.Directory);
}
public static string [] GetDirectories (string path, string searchPattern, SearchOption searchOption)
{
if (searchOption == SearchOption.TopDirectoryOnly)
return GetDirectories (path, searchPattern);
var all = new List<string> ();
GetDirectoriesRecurse (path, searchPattern, all);
return all.ToArray ();
}
static void GetDirectoriesRecurse (string path, string searchPattern, List<string> all)
{
all.AddRange (GetDirectories (path, searchPattern));
foreach (string dir in GetDirectories (path))
GetDirectoriesRecurse (dir, searchPattern, all);
}
public static string GetDirectoryRoot (string path)
{
Path.Validate (path);
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
// FIXME nice hack but that does not work under windows
return new String(Path.DirectorySeparatorChar,1);
}
public static string [] GetFiles (string path)
{
return GetFiles (path, "*");
}
public static string [] GetFiles (string path, string searchPattern)
{
return GetFileSystemEntries (path, searchPattern, FileAttributes.Directory, 0);
}
public static string[] GetFiles (string path, string searchPattern, SearchOption searchOption)
{
if (searchOption == SearchOption.TopDirectoryOnly)
return GetFiles (path, searchPattern);
var all = new List<string> ();
GetFilesRecurse (path, searchPattern, all);
return all.ToArray ();
}
static void GetFilesRecurse (string path, string searchPattern, List<string> all)
{
all.AddRange (GetFiles (path, searchPattern));
foreach (string dir in GetDirectories (path))
GetFilesRecurse (dir, searchPattern, all);
}
public static string [] GetFileSystemEntries (string path)
{
return GetFileSystemEntries (path, "*");
}
public static string [] GetFileSystemEntries (string path, string searchPattern)
{
return GetFileSystemEntries (path, searchPattern, 0, 0);
}
public static string[] GetLogicalDrives ()
{
return Environment.GetLogicalDrives ();
}
static bool IsRootDirectory (string path)
{
// Unix
if (Path.DirectorySeparatorChar == '/' && path == "/")
return true;
// Windows
if (Path.DirectorySeparatorChar == '\\')
if (path.Length == 3 && path.EndsWith (":\\"))
return true;
return false;
}
public static DirectoryInfo GetParent (string path)
{
Path.Validate (path);
// return null if the path is the root directory
if (IsRootDirectory (path))
return null;
string parent_name = Path.GetDirectoryName (path);
if (parent_name.Length == 0)
parent_name = GetCurrentDirectory();
return new DirectoryInfo (parent_name);
}
public static void Move (string sourceDirName, string destDirName)
{
if (sourceDirName == null)
throw new ArgumentNullException ("sourceDirName");
if (destDirName == null)
throw new ArgumentNullException ("destDirName");
if (sourceDirName.Trim ().Length == 0 || sourceDirName.IndexOfAny (Path.InvalidPathChars) != -1)
throw new ArgumentException ("Invalid source directory name: " + sourceDirName, "sourceDirName");
if (destDirName.Trim ().Length == 0 || destDirName.IndexOfAny (Path.InvalidPathChars) != -1)
throw new ArgumentException ("Invalid target directory name: " + destDirName, "destDirName");
if (sourceDirName == destDirName)
throw new IOException ("Source and destination path must be different.");
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
if (Exists (destDirName))
throw new IOException (destDirName + " already exists.");
if (!Exists (sourceDirName) && !File.Exists (sourceDirName))
throw new DirectoryNotFoundException (sourceDirName + " does not exist");
MonoIOError error;
if (!MonoIO.MoveFile (sourceDirName, destDirName, out error))
throw MonoIO.GetException (error);
}
public static void SetAccessControl (string path, DirectorySecurity directorySecurity)
{
if (null == directorySecurity)
throw new ArgumentNullException ("directorySecurity");
directorySecurity.PersistModifications (path);
}
public static void SetCreationTime (string path, DateTime creationTime)
{
File.SetCreationTime (path, creationTime);
}
public static void SetCreationTimeUtc (string path, DateTime creationTimeUtc)
{
SetCreationTime (path, creationTimeUtc.ToLocalTime ());
}
[SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
public static void SetCurrentDirectory (string path)
{
if (path == null)
throw new ArgumentNullException ("path");
if (path.Trim ().Length == 0)
throw new ArgumentException ("path string must not be an empty string or whitespace string");
MonoIOError error;
if (!Exists (path))
throw new DirectoryNotFoundException ("Directory \"" +
path + "\" not found.");
MonoIO.SetCurrentDirectory (path, out error);
if (error != MonoIOError.ERROR_SUCCESS)
throw MonoIO.GetException (path, error);
}
public static void SetLastAccessTime (string path, DateTime lastAccessTime)
{
File.SetLastAccessTime (path, lastAccessTime);
}
public static void SetLastAccessTimeUtc (string path, DateTime lastAccessTimeUtc)
{
SetLastAccessTime (path, lastAccessTimeUtc.ToLocalTime ());
}
public static void SetLastWriteTime (string path, DateTime lastWriteTime)
{
File.SetLastWriteTime (path, lastWriteTime);
}
public static void SetLastWriteTimeUtc (string path, DateTime lastWriteTimeUtc)
{
SetLastWriteTime (path, lastWriteTimeUtc.ToLocalTime ());
}
// private
// Does the common validation, searchPattern has already been checked for not-null
static string ValidateDirectoryListing (string path, string searchPattern, out bool stop)
{
Path.Validate (path);
string wild = Path.Combine (path, searchPattern);
string wildpath = Path.GetDirectoryName (wild);
if (wildpath.IndexOfAny (Path.InvalidPathChars) != -1)
throw new ArgumentException ("Pattern contains invalid characters", "pattern");
MonoIOError error;
if (!MonoIO.ExistsDirectory (wildpath, out error)) {
if (error == MonoIOError.ERROR_SUCCESS) {
MonoIOError file_error;
if (MonoIO.ExistsFile (wildpath, out file_error))
throw new IOException ("The directory name is invalid.");
}
if (error != MonoIOError.ERROR_PATH_NOT_FOUND)
throw MonoIO.GetException (wildpath, error);
if (wildpath.IndexOfAny (SearchPattern.WildcardChars) == -1)
throw new DirectoryNotFoundException ("Directory '" + wildpath + "' not found.");
if (path.IndexOfAny (SearchPattern.WildcardChars) == -1)
throw new ArgumentException ("Pattern is invalid", "searchPattern");
throw new ArgumentException ("Path is invalid", "path");
}
stop = false;
return wild;
}
private static string [] GetFileSystemEntries (string path, string searchPattern, FileAttributes mask, FileAttributes attrs)
{
if (searchPattern == null)
throw new ArgumentNullException ("searchPattern");
if (searchPattern.Length == 0)
return new string [] {};
bool stop;
string path_with_pattern = ValidateDirectoryListing (path, searchPattern, out stop);
if (stop)
return new string [] { path_with_pattern };
MonoIOError error;
string [] result = MonoIO.GetFileSystemEntries (path, path_with_pattern, (int) attrs, (int) mask, out error);
if (error != 0)
throw MonoIO.GetException (Path.GetDirectoryName (Path.Combine (path, searchPattern)), error);
return result;
}
#if NET_4_0
public static string[] GetFileSystemEntries (string path, string searchPattern, SearchOption searchOption)
{
// Take the simple way home:
return new List<string> (EnumerateFileSystemEntries (path, searchPattern, searchOption)).ToArray ();
}
static void EnumerateCheck (string path, string searchPattern, SearchOption searchOption)
{
if (searchPattern == null)
throw new ArgumentNullException ("searchPattern");
if (searchPattern.Length == 0)
return;
if (searchOption != SearchOption.TopDirectoryOnly && searchOption != SearchOption.AllDirectories)
throw new ArgumentOutOfRangeException ("searchoption");
Path.Validate (path);
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
}
internal static IEnumerable<string> EnumerateKind (string path, string searchPattern, SearchOption searchOption, FileAttributes kind)
{
if (searchPattern.Length == 0)
yield break;
bool stop;
string path_with_pattern = ValidateDirectoryListing (path, searchPattern, out stop);
if (stop){
yield return path_with_pattern;
yield break;
}
IntPtr handle;
MonoIOError error;
FileAttributes rattr;
string s = MonoIO.FindFirst (path, path_with_pattern, out rattr, out error, out handle);
try {
while (s != null) {
// Convert any file specific flag to FileAttributes.Normal which is used as include files flag
if (((rattr & FileAttributes.Directory) == 0) && rattr != 0)
rattr |= FileAttributes.Normal;
if ((rattr & kind) != 0)
yield return s;
s = MonoIO.FindNext (handle, out rattr, out error);
}
if (error != 0)
throw MonoIO.GetException (Path.GetDirectoryName (Path.Combine (path, searchPattern)), (MonoIOError) error);
} finally {
if (handle != IntPtr.Zero)
MonoIO.FindClose (handle);
}
if (searchOption == SearchOption.AllDirectories) {
s = MonoIO.FindFirst (path, Path.Combine (path, "*"), out rattr, out error, out handle);
try {
while (s != null) {
if ((rattr & FileAttributes.Directory) != 0 && (rattr & FileAttributes.ReparsePoint) == 0)
foreach (string child in EnumerateKind (s, searchPattern, searchOption, kind))
yield return child;
s = MonoIO.FindNext (handle, out rattr, out error);
}
if (error != 0)
throw MonoIO.GetException (path, (MonoIOError) error);
} finally {
if (handle != IntPtr.Zero)
MonoIO.FindClose (handle);
}
}
}
public static IEnumerable<string> EnumerateDirectories (string path, string searchPattern, SearchOption searchOption)
{
EnumerateCheck (path, searchPattern, searchOption);
return EnumerateKind (path, searchPattern, searchOption, FileAttributes.Directory);
}
public static IEnumerable<string> EnumerateDirectories (string path, string searchPattern)
{
EnumerateCheck (path, searchPattern, SearchOption.TopDirectoryOnly);
return EnumerateKind (path, searchPattern, SearchOption.TopDirectoryOnly, FileAttributes.Directory);
}
public static IEnumerable<string> EnumerateDirectories (string path)
{
Path.Validate (path); // no need for EnumerateCheck since we supply valid arguments
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
return EnumerateKind (path, "*", SearchOption.TopDirectoryOnly, FileAttributes.Directory);
}
public static IEnumerable<string> EnumerateFiles (string path, string searchPattern, SearchOption searchOption)
{
EnumerateCheck (path, searchPattern, searchOption);
return EnumerateKind (path, searchPattern, searchOption, FileAttributes.Normal);
}
public static IEnumerable<string> EnumerateFiles (string path, string searchPattern)
{
EnumerateCheck (path, searchPattern, SearchOption.TopDirectoryOnly);
return EnumerateKind (path, searchPattern, SearchOption.TopDirectoryOnly, FileAttributes.Normal);
}
public static IEnumerable<string> EnumerateFiles (string path)
{
Path.Validate (path); // no need for EnumerateCheck since we supply valid arguments
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
return EnumerateKind (path, "*", SearchOption.TopDirectoryOnly, FileAttributes.Normal);
}
public static IEnumerable<string> EnumerateFileSystemEntries (string path, string searchPattern, SearchOption searchOption)
{
EnumerateCheck (path, searchPattern, searchOption);
return EnumerateKind (path, searchPattern, searchOption, FileAttributes.Normal | FileAttributes.Directory);
}
public static IEnumerable<string> EnumerateFileSystemEntries (string path, string searchPattern)
{
EnumerateCheck (path, searchPattern, SearchOption.TopDirectoryOnly);
return EnumerateKind (path, searchPattern, SearchOption.TopDirectoryOnly, FileAttributes.Normal | FileAttributes.Directory);
}
public static IEnumerable<string> EnumerateFileSystemEntries (string path)
{
Path.Validate (path); // no need for EnumerateCheck since we supply valid arguments
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
return EnumerateKind (path, "*", SearchOption.TopDirectoryOnly, FileAttributes.Normal | FileAttributes.Directory);
}
#endif
public static DirectorySecurity GetAccessControl (string path, AccessControlSections includeSections)
{
return new DirectorySecurity (path, includeSections);
}
public static DirectorySecurity GetAccessControl (string path)
{
// AccessControlSections.Audit requires special permissions.
return GetAccessControl (path,
AccessControlSections.Owner |
AccessControlSections.Group |
AccessControlSections.Access);
}
}
}
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