318 lines
12 KiB
C#
318 lines
12 KiB
C#
/*
|
|
Tesses.VirtualFilesystem a library for virtual filesystems in .NET
|
|
Copyright (C) 2023 Mike Nolan
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
using System;
|
|
using Tesses.VirtualFilesystem;
|
|
using Tesses.VirtualFilesystem.Extensions;
|
|
using System.IO;
|
|
using System.Threading.Tasks;
|
|
using System.Threading;
|
|
using System.Linq;
|
|
using System.Collections.Generic;
|
|
using System.Text;
|
|
using System.Runtime.InteropServices;
|
|
using System.ComponentModel;
|
|
|
|
namespace Tesses.VirtualFilesystem.Filesystems
|
|
{
|
|
public class LocalFileSystem : SyncFileSystem
|
|
{
|
|
public override string ConvertPathFromUnixPath(UnixPath path)
|
|
{
|
|
return path.ToLocal();
|
|
|
|
}
|
|
public override UnixPath ConvertPathToUnixPath(string path)
|
|
{
|
|
return UnixPath.FromLocal(path);
|
|
}
|
|
public override void CreateDirectory(UnixPath directory)
|
|
{
|
|
Directory.CreateDirectory(ConvertPathFromUnixPath(directory));
|
|
}
|
|
|
|
public override void DeleteDirectory(UnixPath path)
|
|
{
|
|
Directory.Delete(ConvertPathFromUnixPath(path));
|
|
}
|
|
|
|
public override void DeleteFile(UnixPath path)
|
|
{
|
|
File.Delete(ConvertPathFromUnixPath(path));
|
|
}
|
|
|
|
public override bool DirectoryExists(UnixPath path)
|
|
{
|
|
return Directory.Exists(ConvertPathFromUnixPath(path));
|
|
}
|
|
|
|
public override IEnumerable<UnixPath> EnumerateFileSystemEntries(UnixPath path)
|
|
{
|
|
foreach(var item in Directory.EnumerateFileSystemEntries(ConvertPathFromUnixPath(path)))
|
|
{
|
|
yield return ConvertPathToUnixPath(item);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
public override bool FileExists(UnixPath path)
|
|
{
|
|
return File.Exists(ConvertPathFromUnixPath(path));
|
|
}
|
|
|
|
public override DateTime GetCreationTime(UnixPath path)
|
|
{
|
|
return FileExists(path) ? File.GetCreationTime(ConvertPathFromUnixPath(path)) : Directory.GetCreationTime(ConvertPathFromUnixPath(path));
|
|
}
|
|
|
|
public override DateTime GetLastAccessTime(UnixPath path)
|
|
{
|
|
return FileExists(path) ? File.GetLastAccessTime(ConvertPathFromUnixPath(path)) : Directory.GetLastAccessTime(ConvertPathFromUnixPath(path));
|
|
|
|
}
|
|
|
|
public override DateTime GetLastWriteTime(UnixPath path)
|
|
{
|
|
return FileExists(path) ? File.GetLastAccessTime(ConvertPathFromUnixPath(path)) : Directory.GetLastWriteTime(ConvertPathFromUnixPath(path));
|
|
|
|
}
|
|
|
|
public override void MoveDirectory(UnixPath src, UnixPath dest)
|
|
{
|
|
Directory.Move(ConvertPathFromUnixPath(src),ConvertPathFromUnixPath(dest));
|
|
}
|
|
|
|
public override void MoveFile(UnixPath src, UnixPath dest)
|
|
{
|
|
File.Move(ConvertPathFromUnixPath(src),ConvertPathFromUnixPath(dest));
|
|
}
|
|
|
|
public override Stream Open(UnixPath path, FileMode mode, FileAccess access, FileShare share)
|
|
{
|
|
return File.Open(ConvertPathFromUnixPath(path),mode,access,share);
|
|
}
|
|
|
|
public override void SetCreationTime(UnixPath path, DateTime time)
|
|
{
|
|
if(FileExists(path))
|
|
{
|
|
File.SetCreationTime(ConvertPathFromUnixPath(path),time);
|
|
}
|
|
else
|
|
{
|
|
Directory.SetCreationTime(ConvertPathFromUnixPath(path),time);
|
|
}
|
|
}
|
|
|
|
public override void SetLastAccessTime(UnixPath path, DateTime time)
|
|
{
|
|
if(FileExists(path))
|
|
{
|
|
File.SetLastAccessTime(ConvertPathFromUnixPath(path),time);
|
|
}
|
|
else
|
|
{
|
|
Directory.SetLastAccessTime(ConvertPathFromUnixPath(path),time);
|
|
}
|
|
}
|
|
private class LocalWatcher : IVirtualWatcher
|
|
{
|
|
FileSystemWatcher watcher;
|
|
LocalFileSystem _fs;
|
|
public LocalWatcher(LocalFileSystem fs,UnixPath path)
|
|
{
|
|
watcher=new FileSystemWatcher(fs.ConvertPathFromUnixPath(path));
|
|
watcher.Changed += (sender,e)=>{
|
|
Changed?.Invoke(this,new VirtualWatcherChangedArgs(fs,e.ChangeType,fs.ConvertPathToUnixPath(e.FullPath)));
|
|
};
|
|
watcher.Created += (sender,e)=>{
|
|
Created?.Invoke(this,new VirtualWatcherChangedArgs(fs,e.ChangeType,fs.ConvertPathToUnixPath(e.FullPath)));
|
|
};
|
|
watcher.Deleted += (sender,e)=>{
|
|
Deleted?.Invoke(this,new VirtualWatcherChangedArgs(fs,e.ChangeType,fs.ConvertPathToUnixPath(e.FullPath)));
|
|
};
|
|
watcher.Error += (sender,e)=>{
|
|
Error?.Invoke(this,e);
|
|
};
|
|
watcher.Renamed += (sender,e)=>{
|
|
Renamed?.Invoke(this,new VirtualWatcherRenamedEventArgs(fs,e.ChangeType,fs.ConvertPathToUnixPath(e.FullPath),fs.ConvertPathToUnixPath(e.OldFullPath)));
|
|
};
|
|
_fs=fs;
|
|
}
|
|
public int InternalBufferSize { get => watcher.InternalBufferSize; set => watcher.InternalBufferSize=value;}
|
|
public NotifyFilters NotifyFilter { get => watcher.NotifyFilter; set => watcher.NotifyFilter=value; }
|
|
public bool EnableRaisingEvents { get => watcher.EnableRaisingEvents; set => watcher.EnableRaisingEvents=value; }
|
|
public string Filter { get => watcher.Filter; set => watcher.Filter=value; }
|
|
public bool IncludeSubdirectories { get => watcher.IncludeSubdirectories; set => watcher.IncludeSubdirectories=value;}
|
|
|
|
public event EventHandler<VirtualWatcherChangedArgs> Changed;
|
|
public event EventHandler<VirtualWatcherChangedArgs> Created;
|
|
public event EventHandler<VirtualWatcherChangedArgs> Deleted;
|
|
public event EventHandler<VirtualWatcherRenamedEventArgs> Renamed;
|
|
public event EventHandler<ErrorEventArgs> Error;
|
|
|
|
public void Dispose()
|
|
{
|
|
this.watcher.Dispose();
|
|
}
|
|
}
|
|
|
|
public override IVirtualWatcher WatchDirectory(UnixPath dir)
|
|
{
|
|
return new LocalWatcher(this,dir);
|
|
}
|
|
public override void CreateHardlink(UnixPath src, UnixPath dest)
|
|
{
|
|
if(DirectoryExists(src)) return;
|
|
if(Environment.OSVersion.Platform == PlatformID.Win32NT)
|
|
{
|
|
WindowsNative.CreateHardlink(ConvertPathFromUnixPath(dest),ConvertPathFromUnixPath(src),IntPtr.Zero);
|
|
}
|
|
else
|
|
{
|
|
Mono.Unix.Native.Syscall.link(ConvertPathFromUnixPath(src),ConvertPathFromUnixPath(dest));
|
|
}
|
|
|
|
}
|
|
public override void CreateSymlink(UnixPath src, UnixPath dest)
|
|
{
|
|
if(Environment.OSVersion.Platform == PlatformID.Win32NT)
|
|
{
|
|
int flag = DirectoryExists(src) ? 0x1 : 0;
|
|
WindowsNative.CreateSymbolicLinkFix(ConvertPathFromUnixPath(dest),ConvertPathFromUnixPath(src),flag);
|
|
}else{
|
|
Mono.Unix.Native.Syscall.symlink(ConvertPathFromUnixPath(src),ConvertPathFromUnixPath(dest));
|
|
}
|
|
}
|
|
|
|
public override bool SymlinkExists(UnixPath file)
|
|
{
|
|
if(Environment.OSVersion.Platform == PlatformID.Win32NT)
|
|
{
|
|
return File.GetAttributes(ConvertPathFromUnixPath(file)).HasFlag(FileAttributes.ReparsePoint);
|
|
}else{
|
|
/* Mono.Unix.Native.Stat buf;
|
|
if(Mono.Unix.Native.Syscall.stat(ConvertPathFromUnixPath(file),out buf) == 0)
|
|
return buf.st_mode.HasFlag(Mono.Unix.Native.FilePermissions.S_IFLNK);*/
|
|
|
|
return File.GetAttributes(ConvertPathFromUnixPath(file)).HasFlag(FileAttributes.ReparsePoint);
|
|
|
|
|
|
}
|
|
|
|
}
|
|
private static class WindowsNative
|
|
{
|
|
[DllImport("kernel32.dll", EntryPoint = "CreateSymbolicLinkW", CharSet = CharSet.Unicode, SetLastError = true)]
|
|
static extern int CreateSymbolicLink(string lpSymlinkFileName, string lpTargetFileName, int dwFlags);
|
|
[DllImport("kernel32.dll", EntryPoint = "CreateHardLinkW", CharSet = CharSet.Unicode, SetLastError = true)]
|
|
public static extern bool CreateHardlink(string lpSymlinkFileName, string lpTargetFileName, IntPtr dwFlags);
|
|
|
|
public static int CreateSymbolicLinkFix(string lpSymlinkFileName, string lpTargetFileName, int dwFlags) {
|
|
var result = CreateSymbolicLink(lpSymlinkFileName, lpTargetFileName, dwFlags);
|
|
if (result == 1) return 0; // Success
|
|
return Marshal.GetLastWin32Error();
|
|
}
|
|
private static readonly IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);
|
|
|
|
private const uint FILE_READ_EA = 0x0008;
|
|
private const uint FILE_FLAG_BACKUP_SEMANTICS = 0x2000000;
|
|
|
|
[DllImport("Kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
|
|
static extern uint GetFinalPathNameByHandle(IntPtr hFile, [MarshalAs(UnmanagedType.LPTStr)] StringBuilder lpszFilePath, uint cchFilePath, uint dwFlags);
|
|
|
|
[DllImport("kernel32.dll", SetLastError = true)]
|
|
[return: MarshalAs(UnmanagedType.Bool)]
|
|
static extern bool CloseHandle(IntPtr hObject);
|
|
|
|
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
|
|
public static extern IntPtr CreateFile(
|
|
[MarshalAs(UnmanagedType.LPTStr)] string filename,
|
|
[MarshalAs(UnmanagedType.U4)] uint access,
|
|
[MarshalAs(UnmanagedType.U4)] FileShare share,
|
|
IntPtr securityAttributes, // optional SECURITY_ATTRIBUTES struct or IntPtr.Zero
|
|
[MarshalAs(UnmanagedType.U4)] FileMode creationDisposition,
|
|
[MarshalAs(UnmanagedType.U4)] uint flagsAndAttributes,
|
|
IntPtr templateFile);
|
|
|
|
public static string GetFinalPathName(string path)
|
|
{
|
|
var h = CreateFile(path,
|
|
FILE_READ_EA,
|
|
FileShare.ReadWrite | FileShare.Delete,
|
|
IntPtr.Zero,
|
|
FileMode.Open,
|
|
FILE_FLAG_BACKUP_SEMANTICS,
|
|
IntPtr.Zero);
|
|
if (h == INVALID_HANDLE_VALUE)
|
|
throw new Win32Exception();
|
|
|
|
try
|
|
{
|
|
var sb = new StringBuilder(1024);
|
|
var res = GetFinalPathNameByHandle(h, sb, 1024, 0);
|
|
if (res == 0)
|
|
throw new Win32Exception();
|
|
|
|
return sb.ToString();
|
|
}
|
|
finally
|
|
{
|
|
CloseHandle(h);
|
|
}
|
|
}
|
|
}
|
|
public override bool CanWatch(UnixPath path)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
|
|
public override UnixPath ReadLink(UnixPath file)
|
|
{
|
|
|
|
if(!SymlinkExists(file)) return file;
|
|
if(Environment.OSVersion.Platform == PlatformID.Win32NT)
|
|
{
|
|
return ConvertPathToUnixPath(WindowsNative.GetFinalPathName(ConvertPathFromUnixPath(file)));
|
|
}else{
|
|
StringBuilder b=new StringBuilder(4096);
|
|
if(Mono.Unix.Native.Syscall.readlink(ConvertPathFromUnixPath(file),b)>=0)
|
|
{
|
|
return ConvertPathToUnixPath(b.ToString());
|
|
}
|
|
|
|
|
|
}
|
|
return file;
|
|
}
|
|
|
|
public override void SetLastWriteTime(UnixPath path, DateTime time)
|
|
{
|
|
if(FileExists(path))
|
|
{
|
|
File.SetLastWriteTime(ConvertPathFromUnixPath(path),time);
|
|
}
|
|
else
|
|
{
|
|
Directory.SetLastWriteTime(ConvertPathFromUnixPath(path),time);
|
|
}
|
|
}
|
|
}
|
|
}
|