Added a hacky, but working way to have directory simbolic links for now.
This commit is contained in:
Karolis2011
259
ASS.Server/Helpers/EmetNativeMethods.cs
Normal file
259
ASS.Server/Helpers/EmetNativeMethods.cs
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@@ -0,0 +1,259 @@
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using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace ASS.Server.Helpers
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{
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// TODO: Remove when https://github.com/joshudson/Emet/pull/3 is merged
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internal class EmetNativeMethods
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{
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[StructLayout(LayoutKind.Sequential)]
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internal struct dirent64 {
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internal ulong d_ino;
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internal ulong d_off;
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internal ushort d_reclen;
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internal byte d_type;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst=256)]
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internal byte[] d_name;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct statbuf64 {
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internal ulong st_dev;
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internal ulong st_ino;
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internal ulong st_nlink;
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internal uint st_mode;
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internal uint st_uid;
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internal uint st_gid;
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internal ulong st_rdev;
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internal ulong st_size;
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internal ulong st_blksize;
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internal ulong st_blocks; /* number of 512 byte blocks */
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internal long st_atime;
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internal ulong st_atime_nsec;
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internal long st_mtime;
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internal ulong st_mtime_nsec;
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internal long st_ctime;
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internal ulong st_ctime_nsec;
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internal ulong st_glibc_reserved0;
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internal ulong st_glibc_reserved1;
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internal ulong st_glibc_reserved2;
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};
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internal const int statbuf_version = 1;
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern IntPtr opendir([MarshalAs(UnmanagedType.LPArray)] byte[] path);
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern IntPtr closedir(IntPtr dir);
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern int readdir64_r(IntPtr dir, ref dirent64 entry, out IntPtr result);
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern int __xstat64(int version, [MarshalAs(UnmanagedType.LPArray)] byte[] file, out statbuf64 buf);
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern int __lxstat64(int version, [MarshalAs(UnmanagedType.LPArray)] byte[] file, out statbuf64 buf);
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern int __fxstat64(int version, IntPtr file, out statbuf64 buf);
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern int rename([MarshalAs(UnmanagedType.LPArray)] byte[] from, [MarshalAs(UnmanagedType.LPArray)] byte[] to);
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern int link([MarshalAs(UnmanagedType.LPArray)] byte[] filename, [MarshalAs(UnmanagedType.LPArray)] byte[] linktarget);
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern int symlink([MarshalAs(UnmanagedType.LPArray)] byte[] filename, [MarshalAs(UnmanagedType.LPArray)] byte[] linktarget);
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[DllImport("libc.so.6", SetLastError=true)]
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internal static extern long readlink([MarshalAs(UnmanagedType.LPArray)] byte[] filename, [MarshalAs(UnmanagedType.LPArray)] byte[] buffer, long buflen);
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internal const int FileFsVolumeInformation = 1;
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internal const int FileBasicInformation = 4;
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internal const int FileStandardInformation = 5;
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internal const int FileInternalInformation = 6;
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internal const int FileAllInformation = 18;
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internal static readonly IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);
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internal const uint MOVEFILE_REPLACE_EXISTING = 1;
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internal const uint FILE_SHARE_READ = 1;
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internal const uint FILE_SHARE_WRITE = 2;
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internal const uint FILE_SHARE_DELETE = 4;
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internal const uint FILE_SHARE_ALL = 7;
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internal const uint CREATE_ALWAYS = 2;
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internal const uint CREATE_NEW = 1;
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internal const uint OPEN_ALWAYS = 4;
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internal const uint OPEN_EXISTING = 3;
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internal const uint TRUNCATE_EXISTING = 5;
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internal const uint FILE_ATTRIBUTE_DIRECTORY = 16;
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internal const uint FILE_ATTRIBUTE_REPARSE_POINT = 1024;
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internal const uint FILE_READ_ATTRIBUTES = 128;
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internal const uint FILE_FLAG_BACKUP_SEMANTICS = 0x2000000;
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internal const uint FILE_FLAG_OPEN_NO_RECALL = 0x1000000;
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internal const uint FILE_FLAG_OPEN_REPARSE_POINT = 0x200000;
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internal const uint SYMBOLIC_LINK_FLAG_DIRECTORY = 1;
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internal const uint SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE = 2;
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internal const uint FSCTL_GET_REPARSE_POINT = 589992;
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[StructLayout(LayoutKind.Sequential)]
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internal struct IO_STATUS_BLOCK {
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internal IntPtr Status;
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internal UIntPtr Information;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct REPARSE_DATA_BUFFER_SYMLINK {
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internal uint ReparseTag;
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internal ushort ReparseDataLength;
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internal ushort Reserved;
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internal ushort SubstituteNameOffset;
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internal ushort SubstituteNameLength;
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internal ushort PrintNameOffset;
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internal ushort PrintNameLength;
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internal uint Flags;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_BASIC_INFORMATION {
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internal ulong CreationTime; // 100ns units since Jan 1 1601
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internal ulong LastAccessTime;
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internal ulong LastWriteTime;
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internal ulong ChangeTime;
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internal uint FileAttributes;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_STANDARD_INFORMATION {
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internal ulong AllocationSize;
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internal ulong EndOfFile;
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internal uint NumberOfLinks;
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internal bool DeletePending;
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internal bool Directory;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_INTERNAL_INFORMATION {
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internal ulong file_index;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_FS_VOLUME_INFORMATION {
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internal ulong VolumeCreationTime;
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internal uint VolumeSerialNumber;
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internal uint VolumeLabelLength;
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internal bool SupportsObjects;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_EA_INFORMATION {
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internal uint EaSize;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_ACCESS_INFORMATION {
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internal uint AccessMask;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_POSITION_INFORMATION {
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internal ulong CurrentByteOffset;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_MODE_INFORMATION {
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internal uint Mode;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_ALIGNMENT_INFORMATION {
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internal uint AlignmentRequirement;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILE_ALL_INFORMATION {
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internal FILE_BASIC_INFORMATION BasicInformation;
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internal FILE_STANDARD_INFORMATION StandardInformation;
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internal FILE_INTERNAL_INFORMATION InternalInformation;
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internal FILE_EA_INFORMATION EaInformation;
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internal FILE_ACCESS_INFORMATION AccessInformation;
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internal FILE_POSITION_INFORMATION PositionInformation;
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internal FILE_MODE_INFORMATION ModeInformation;
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internal FILE_ALIGNMENT_INFORMATION AlignmentInformation;
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internal uint FileNameLength; // Variable structure
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct FILETIME {
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internal uint dwLowDateTime;
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internal uint dwHighDateTime;
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}
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[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
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internal struct WIN32_FIND_DATA {
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internal uint dwFileAttributes;
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internal FILETIME ftCreationTime;
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internal FILETIME ftLastAccessTime;
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internal FILETIME ftLastWriteTime;
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internal uint nFileSizeHigh;
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internal uint nFileSizeLow;
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internal uint dwReserved0;
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internal uint dwReserved1;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst=260)]
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internal string cFileName;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst=14)]
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internal string cAlternateFileName;
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}
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[DllImport("ntdll.dll")]
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internal static extern int NtQueryVolumeInformationFile(IntPtr handle, out IO_STATUS_BLOCK block, out FILE_FS_VOLUME_INFORMATION volume_info, int length, int Class);
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[DllImport("ntdll.dll")]
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internal static extern int NtQueryInformationFile(IntPtr handle, out IO_STATUS_BLOCK block, out FILE_BASIC_INFORMATION basic_info, int length, int Class);
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[DllImport("ntdll.dll")]
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internal static extern int NtQueryInformationFile(IntPtr handle, out IO_STATUS_BLOCK block, out FILE_STANDARD_INFORMATION standard_info, int length, int Class);
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[DllImport("ntdll.dll")]
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internal static extern int NtQueryInformationFile(IntPtr handle, out IO_STATUS_BLOCK block, out FILE_INTERNAL_INFORMATION internal_info, int length, int Class);
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[DllImport("ntdll.dll")]
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internal static extern int NtQueryInformationFile(IntPtr handle, out IO_STATUS_BLOCK block, out FILE_ALL_INFORMATION all_info, int length, int Class);
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[DllImport("ntdll.dll")]
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internal static extern int RtlNtStatusToDosError(int ntstatus);
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[DllImport("kernel32.dll", SetLastError=true)]
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internal static extern void SetLastError(int error);
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[DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
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internal static extern IntPtr FindFirstFileW(string filename, out WIN32_FIND_DATA FindFileData);
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[DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
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internal static extern byte FindNextFileW(IntPtr hFindFile, out WIN32_FIND_DATA FindFileData);
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[DllImport("kernel32.dll", SetLastError=true)]
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internal static extern byte FindClose(IntPtr hFindFile);
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[DllImport("kernel32.dll", SetLastError=true)]
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internal static extern byte MoveFileEx(string oldfilename, string newfilename, uint flags);
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[DllImport("kernel32.dll", SetLastError=true)]
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internal static extern byte CloseHandle(IntPtr hFindFile);
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[DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
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internal static extern IntPtr CreateFileW(string filename, uint dwDesiredAccess, uint dwShareMode,
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IntPtr lpSecurityAttributes, uint dwCreationDisposition, uint dwFlagsAndAttributes, IntPtr hTemplateFile);
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[DllImport("kernel32.dll", SetLastError=true)]
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internal static extern byte DeviceIoControl(IntPtr hDevice, uint dwIoControlCode, IntPtr inptr, uint inlen,
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[MarshalAs(UnmanagedType.LPArray)] byte[] outdata, uint outlen, out uint returned, IntPtr overlapped);
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[DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
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internal static extern byte CreateSymbolicLinkW(string lpSymlinkFileName, string lpTargetFileName, uint dwFlags);
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[DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
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internal static extern byte CreateHardLinkW(string lpFileName, string lpExistingFileName, IntPtr lpSecurityAttributes);
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}
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}
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@@ -1,8 +1,10 @@
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using ASS.Server.Extensions;
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using ASS.Server.Extensions;
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using Emet.FileSystems;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Configuration;
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using System;
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using System;
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using System.Collections.Generic;
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using System.Collections.Generic;
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using System.IO;
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using System.IO;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Text;
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namespace ASS.Server.Helpers
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namespace ASS.Server.Helpers
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@@ -22,5 +24,77 @@ namespace ASS.Server.Helpers
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return Path.GetFullPath(Path.Combine(extraPaths.PreAppend(paths)));
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return Path.GetFullPath(Path.Combine(extraPaths.PreAppend(paths)));
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return Path.GetFullPath(Path.Combine(extraPaths.PreAppend(paths).PreAppend(globalConfig["WorkDir"])));
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return Path.GetFullPath(Path.Combine(extraPaths.PreAppend(paths).PreAppend(globalConfig["WorkDir"])));
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}
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}
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public static void CreateRelativeSymbolicLink(string target, string link, FileType targetHint = FileType.LinkTargetHintNotAvailable)
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{
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if (targetHint == FileType.File || targetHint == FileType.Directory)
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target = Path.GetRelativePath(Path.Combine(link, ".."), target);
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CreateSymbolicLink(target, link, targetHint);
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}
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// TODO: Remove when https://github.com/joshudson/Emet/pull/3 is merged
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///<summary>Creates a symbolic link to a file</summary>
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///<param name="targetpath">The path to write to the symbolic link</param>
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///<param name="linkpath">The path to create the new link at</param>
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///<param name="targethint">The type of node the link is referring to</param>
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///<exception cref="System.IO.IOException">An IO error occurred</exception>
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///<exception cref="System.PlatformNotSupportedException">linkpath doesn't exist and targethint was neither File nor Directory and this platform uses explicit link types</exception>
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///<remarks>If targetpath doesn't exist and targethint is not provided, this call will fail on Windows.</remarks>
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public static void CreateSymbolicLink(string targetpath, string linkpath, FileType targethint = FileType.LinkTargetHintNotAvailable)
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||||||
|
{
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||||||
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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||||||
|
{
|
||||||
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var btargetpath = NameToByteArray(targetpath);
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var blinkpath = NameToByteArray(linkpath);
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||||||
|
if (EmetNativeMethods.symlink(btargetpath, blinkpath) != 0)
|
||||||
|
{
|
||||||
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var errno = Marshal.GetLastWin32Error();
|
||||||
|
var ci = new System.ComponentModel.Win32Exception();
|
||||||
|
throw new IOException(ci.Message, errno);
|
||||||
|
}
|
||||||
|
} else if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
|
||||||
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uint flags = 0;
|
||||||
|
if (targethint != FileType.File && targethint != FileType.Directory)
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||||||
|
{
|
||||||
|
if (!Path.IsPathRooted(targetpath))
|
||||||
|
{
|
||||||
|
var ldname = Path.GetDirectoryName(linkpath);
|
||||||
|
if (string.IsNullOrEmpty(ldname)) ldname = DirectoryEntry.CurrentDirectoryName;
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targetpath = Path.Combine(ldname, targetpath);
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|
}
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var node = new DirectoryEntry(targetpath, FileSystem.FollowSymbolicLinks.Never);
|
||||||
|
var hint = (node.FileType == FileType.SymbolicLink) ? node.LinkTargetHint : node.FileType;
|
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|
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;
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -90,7 +90,7 @@ namespace ASS.Server.Services
|
|||||||
throw new Exception($"Byond version '{version.Major}.{version.Minor}' data mismatches folder name or ByondVersion data. Please manually remove this version.");
|
throw new Exception($"Byond version '{version.Major}.{version.Minor}' data mismatches folder name or ByondVersion data. Please manually remove this version.");
|
||||||
if (Directory.Exists(GetByondDirectoryPath()))
|
if (Directory.Exists(GetByondDirectoryPath()))
|
||||||
Directory.Delete(GetByondDirectoryPath());
|
Directory.Delete(GetByondDirectoryPath());
|
||||||
Emet.FileSystems.FileSystem.CreateSymbolicLink(getByondVersionDirectoryName(version), GetByondDirectoryPath());
|
FileSystemHelper.CreateRelativeSymbolicLink(GetByondDirectoryPath(version), GetByondDirectoryPath(), Emet.FileSystems.FileType.Directory);
|
||||||
if (!version.Equals(getVersion()))
|
if (!version.Equals(getVersion()))
|
||||||
throw new Exception($"Byond version switch failed.");
|
throw new Exception($"Byond version switch failed.");
|
||||||
}
|
}
|
||||||
|
|||||||
Reference in New Issue
Block a user