Karolis/Aurora-Server-System
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added a hacky, but working way to have directory simbolic links for now.

Browse Source
This commit is contained in:
Karolis2011
2019-08-19 23:35:43 +03:00
parent 0018f804a1
commit 913b69bdf4
3 changed files with 334 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

74
ASS.Server/Helpers/FileSystemHelper.cs
View File

@@ -1,8 +1,10 @@
using ASS.Server.Extensions;
using Emet.FileSystems;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
namespace ASS.Server.Helpers
@@ -22,5 +24,77 @@ namespace ASS.Server.Helpers
return Path.GetFullPath(Path.Combine(extraPaths.PreAppend(paths)));
return Path.GetFullPath(Path.Combine(extraPaths.PreAppend(paths).PreAppend(globalConfig["WorkDir"])));
}
public static void CreateRelativeSymbolicLink(string target, string link, FileType targetHint = FileType.LinkTargetHintNotAvailable)
{
if (targetHint == FileType.File || targetHint == FileType.Directory)
target = Path.GetRelativePath(Path.Combine(link, ".."), target);
CreateSymbolicLink(target, link, targetHint);
}
// TODO: Remove when https://github.com/joshudson/Emet/pull/3 is merged
///<summary>Creates a symbolic link to a file</summary>
///<param name="targetpath">The path to write to the symbolic link</param>
///<param name="linkpath">The path to create the new link at</param>
///<param name="targethint">The type of node the link is referring to</param>
///<exception cref="System.IO.IOException">An IO error occurred</exception>
///<exception cref="System.PlatformNotSupportedException">linkpath doesn't exist and targethint was neither File nor Directory and this platform uses explicit link types</exception>
///<remarks>If targetpath doesn't exist and targethint is not provided, this call will fail on Windows.</remarks>
public static void CreateSymbolicLink(string targetpath, string linkpath, FileType targethint = FileType.LinkTargetHintNotAvailable)
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
var btargetpath = NameToByteArray(targetpath);
var blinkpath = NameToByteArray(linkpath);
if (EmetNativeMethods.symlink(btargetpath, blinkpath) != 0)
{
var errno = Marshal.GetLastWin32Error();
var ci = new System.ComponentModel.Win32Exception();
throw new IOException(ci.Message, errno);
}
} else if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
uint flags = 0;
if (targethint != FileType.File && targethint != FileType.Directory)
{
if (!Path.IsPathRooted(targetpath))
{
var ldname = Path.GetDirectoryName(linkpath);
if (string.IsNullOrEmpty(ldname)) ldname = DirectoryEntry.CurrentDirectoryName;
targetpath = Path.Combine(ldname, targetpath);
}
var node = new DirectoryEntry(targetpath, FileSystem.FollowSymbolicLinks.Never);
var hint = (node.FileType == FileType.SymbolicLink) ? node.LinkTargetHint : node.FileType;
if (hint == FileType.Directory)
flags = EmetNativeMethods.SYMBOLIC_LINK_FLAG_DIRECTORY;
else if (hint != FileType.File)
throw new PlatformNotSupportedException("Windows can't handle symbolic links to file system nodes that don't exist.");
}
if (targethint == FileType.Directory)
flags = EmetNativeMethods.SYMBOLIC_LINK_FLAG_DIRECTORY;
if (0 == EmetNativeMethods.CreateSymbolicLinkW(linkpath, targetpath, flags))
{
var errno = (int)Marshal.GetLastWin32Error();
if (errno == 1314)
{
flags |= EmetNativeMethods.SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE;
if (0 != EmetNativeMethods.CreateSymbolicLinkW(linkpath, targetpath, flags))
return;
var errno2 = (int)Marshal.GetLastWin32Error();
if (errno2 != 1314 && errno2 != 1 && errno2 != 0xA0)
errno = errno2; // Try to get a better error
}
var ci = new System.ComponentModel.Win32Exception();
throw new IOException(ci.Message, unchecked((int)0x80070000 | errno));
}
}
}
internal static byte[] NameToByteArray(string name)
{
var count = Encoding.UTF8.GetByteCount(name);
var bytes = new byte[count + 1];
Encoding.UTF8.GetBytes(name, 0, name.Length, bytes, 0);
return bytes;
}
}
}