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Utility.cs
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Utility.cs
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using System;
using System.IO;
using System.Security.Principal;
using System.Collections.Generic;
using Microsoft.Win32.SafeHandles;
using System.Runtime.InteropServices;
namespace XboxWinFsp
{
public class FileSystemParseException : Exception
{
public FileSystemParseException(String Message = null) : base(Message)
{
HasMessage = Message != null;
}
public bool HasMessage;
}
[Flags]
public enum EFileAccess : uint
{
//
// Standart Section
//
AccessSystemSecurity = 0x1000000, // AccessSystemAcl access type
MaximumAllowed = 0x2000000, // MaximumAllowed access type
Delete = 0x10000,
ReadControl = 0x20000,
WriteDAC = 0x40000,
WriteOwner = 0x80000,
Synchronize = 0x100000,
StandardRightsRequired = 0xF0000,
StandardRightsRead = ReadControl,
StandardRightsWrite = ReadControl,
StandardRightsExecute = ReadControl,
StandardRightsAll = 0x1F0000,
SpecificRightsAll = 0xFFFF,
FILE_READ_DATA = 0x0001, // file & pipe
FILE_LIST_DIRECTORY = 0x0001, // directory
FILE_WRITE_DATA = 0x0002, // file & pipe
FILE_ADD_FILE = 0x0002, // directory
FILE_APPEND_DATA = 0x0004, // file
FILE_ADD_SUBDIRECTORY = 0x0004, // directory
FILE_CREATE_PIPE_INSTANCE = 0x0004, // named pipe
FILE_READ_EA = 0x0008, // file & directory
FILE_WRITE_EA = 0x0010, // file & directory
FILE_EXECUTE = 0x0020, // file
FILE_TRAVERSE = 0x0020, // directory
FILE_DELETE_CHILD = 0x0040, // directory
FILE_READ_ATTRIBUTES = 0x0080, // all
FILE_WRITE_ATTRIBUTES = 0x0100, // all
//
// Generic Section
//
GenericRead = 0x80000000,
GenericWrite = 0x40000000,
GenericExecute = 0x20000000,
GenericAll = 0x10000000,
SPECIFIC_RIGHTS_ALL = 0x00FFFF,
FILE_ALL_ACCESS =
StandardRightsRequired |
Synchronize |
0x1FF,
FILE_GENERIC_READ =
StandardRightsRead |
FILE_READ_DATA |
FILE_READ_ATTRIBUTES |
FILE_READ_EA |
Synchronize,
FILE_GENERIC_WRITE =
StandardRightsWrite |
FILE_WRITE_DATA |
FILE_WRITE_ATTRIBUTES |
FILE_WRITE_EA |
FILE_APPEND_DATA |
Synchronize,
FILE_GENERIC_EXECUTE =
StandardRightsExecute |
FILE_READ_ATTRIBUTES |
FILE_EXECUTE |
Synchronize
}
[Flags]
public enum EFileShare : uint
{
/// <summary>
///
/// </summary>
None = 0x00000000,
/// <summary>
/// Enables subsequent open operations on an object to request read access.
/// Otherwise, other processes cannot open the object if they request read access.
/// If this flag is not specified, but the object has been opened for read access, the function fails.
/// </summary>
Read = 0x00000001,
/// <summary>
/// Enables subsequent open operations on an object to request write access.
/// Otherwise, other processes cannot open the object if they request write access.
/// If this flag is not specified, but the object has been opened for write access, the function fails.
/// </summary>
Write = 0x00000002,
/// <summary>
/// Enables subsequent open operations on an object to request delete access.
/// Otherwise, other processes cannot open the object if they request delete access.
/// If this flag is not specified, but the object has been opened for delete access, the function fails.
/// </summary>
Delete = 0x00000004
}
public enum ECreationDisposition : uint
{
/// <summary>
/// Creates a new file. The function fails if a specified file exists.
/// </summary>
New = 1,
/// <summary>
/// Creates a new file, always.
/// If a file exists, the function overwrites the file, clears the existing attributes, combines the specified file attributes,
/// and flags with FILE_ATTRIBUTE_ARCHIVE, but does not set the security descriptor that the SECURITY_ATTRIBUTES structure specifies.
/// </summary>
CreateAlways = 2,
/// <summary>
/// Opens a file. The function fails if the file does not exist.
/// </summary>
OpenExisting = 3,
/// <summary>
/// Opens a file, always.
/// If a file does not exist, the function creates a file as if dwCreationDisposition is CREATE_NEW.
/// </summary>
OpenAlways = 4,
/// <summary>
/// Opens a file and truncates it so that its size is 0 (zero) bytes. The function fails if the file does not exist.
/// The calling process must open the file with the GENERIC_WRITE access right.
/// </summary>
TruncateExisting = 5
}
[Flags]
public enum EFileAttributes : uint
{
Readonly = 0x00000001,
Hidden = 0x00000002,
System = 0x00000004,
Directory = 0x00000010,
Archive = 0x00000020,
Device = 0x00000040,
Normal = 0x00000080,
Temporary = 0x00000100,
SparseFile = 0x00000200,
ReparsePoint = 0x00000400,
Compressed = 0x00000800,
Offline = 0x00001000,
NotContentIndexed = 0x00002000,
Encrypted = 0x00004000,
Write_Through = 0x80000000,
Overlapped = 0x40000000,
NoBuffering = 0x20000000,
RandomAccess = 0x10000000,
SequentialScan = 0x08000000,
DeleteOnClose = 0x04000000,
BackupSemantics = 0x02000000,
PosixSemantics = 0x01000000,
OpenReparsePoint = 0x00200000,
OpenNoRecall = 0x00100000,
FirstPipeInstance = 0x00080000
}
public class Natives
{
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern SafeFileHandle CreateFile(
[MarshalAs(UnmanagedType.LPTStr)] string lpFileName,
[MarshalAs(UnmanagedType.U4)] EFileAccess dwDesiredAccess,
[MarshalAs(UnmanagedType.U4)] EFileShare dwShareMode,
IntPtr lpSecurityAttributes, // optional SECURITY_ATTRIBUTES struct or IntPtr.Zero
[MarshalAs(UnmanagedType.U4)] ECreationDisposition dwCreationDisposition,
[MarshalAs(UnmanagedType.U4)] EFileAttributes dwFlagsAndAttributes,
IntPtr hTemplateFile);
[DllImport("kernel32.dll", SetLastError = true)]
public static extern bool CloseHandle(SafeHandle hObject);
[DllImport("kernel32.dll")]
public static extern uint GetFileSize(SafeHandle hFile, ref uint lpFileSizeHigh);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool DeviceIoControl(SafeHandle hDevice, uint dwIoControlCode,
IntPtr lpInBuffer, uint nInBufferSize, ref DiskGeometry lpOutBuffer,
uint nOutBufferSize, out uint lpBytesReturned, IntPtr lpOverlapped);
[StructLayout(LayoutKind.Sequential)]
private struct DiskGeometry
{
private long cylinders;
private uint mediaType;
private uint tracksPerCylinder;
private uint sectorsPerTrack;
private uint bytesPerSector;
public long DiskSize
{
get
{
return cylinders * tracksPerCylinder *
sectorsPerTrack * bytesPerSector;
}
}
}
public static long GetDriveSize(SafeHandle sfh)
{
DiskGeometry geo = new DiskGeometry();
uint returnedBytes;
DeviceIoControl(sfh, 0x70000, IntPtr.Zero, 0, ref geo,
(uint)Marshal.SizeOf(typeof(DiskGeometry)),
out returnedBytes, IntPtr.Zero);
return geo.DiskSize;
}
}
public class TupleList<T1, T2, T3> : List<Tuple<T1, T2, T3>>
{
public void Add(T1 item, T2 item2, T3 item3)
{
Add(new Tuple<T1, T2, T3>(item, item2, item3));
}
}
static class Utility
{
public static readonly string[] XboxLanguages =
{
"English",
"Japanese",
"German",
"French",
"Spanish",
"Italian",
"Korean",
"Trad.Chinese",
"Portuguese",
"Unused10", // formerly SimpChinese?
"Polish",
"Russian",
"Swedish",
"Turkish",
"Norwegian",
"Dutch",
"Simp.Chinese"
};
public static bool IsAdministrator()
{
return (new WindowsPrincipal(WindowsIdentity.GetCurrent()))
.IsInRole(WindowsBuiltInRole.Administrator);
}
public static ulong RoundToPages(ulong number, ulong pageSize)
{
return (number + pageSize - 1) / pageSize;
}
public static DateTime DecodeMSTime(int dateTime)
{
if (dateTime == 0)
return DateTime.MinValue;
int second = (dateTime & 0x1F) * 2;
int minute = (dateTime >> 5) & 0x3F;
int hour = (dateTime >> 11) & 0x1F;
int day = (dateTime >> 16) & 0x1F;
int month = (dateTime >> 21) & 0x0F;
int year = ((dateTime >> 25) & 0x7F) + 1980;
try
{
return new DateTime(year, month, day, hour, minute, second).ToLocalTime();
}
catch { return DateTime.MinValue; }
}
public static int EncodeMSTime(DateTime dateTime)
{
dateTime = dateTime.ToUniversalTime();
int second = dateTime.Second;
int minute = dateTime.Minute;
int hour = dateTime.Hour;
int day = dateTime.Day;
int month = dateTime.Month;
int year = dateTime.Year;
year -= 1980;
second /= 2;
return (year << 25) | (month << 21) | (day << 16) | (hour << 11) | (minute << 5) | second;
}
public static T ReadStruct<T>(this Stream stream)
{
var size = Marshal.SizeOf(typeof(T));
// Read in a byte array
byte[] bytes = new byte[size];
stream.Read(bytes, 0, size);
//stream.ReadAsync(bytes, 0, size).Wait();
return BytesToStruct<T>(bytes);
}
public static T ReadStruct<T>(this BinaryReader reader)
{
var size = Marshal.SizeOf(typeof(T));
// Read in a byte array
byte[] bytes = reader.ReadBytes(size);
return BytesToStruct<T>(bytes);
}
public static T BytesToStruct<T>(byte[] bytes)
{
// Pin the managed memory while, copy it out the data, then unpin it
var handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
var theStructure = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));
handle.Free();
return theStructure;
}
public static short EndianSwap(this short num)
{
byte[] data = BitConverter.GetBytes(num);
Array.Reverse(data);
return BitConverter.ToInt16(data, 0);
}
public static ushort EndianSwap(this ushort num)
{
byte[] data = BitConverter.GetBytes(num);
Array.Reverse(data);
return BitConverter.ToUInt16(data, 0);
}
public static int EndianSwap(this int num)
{
byte[] data = BitConverter.GetBytes(num);
Array.Reverse(data);
return BitConverter.ToInt32(data, 0);
}
public static uint EndianSwap(this uint num)
{
byte[] data = BitConverter.GetBytes(num);
Array.Reverse(data);
return BitConverter.ToUInt32(data, 0);
}
public static ulong EndianSwap(this ulong num)
{
byte[] data = BitConverter.GetBytes(num);
Array.Reverse(data);
return BitConverter.ToUInt64(data, 0);
}
public static bool BytesMatch(this byte[] b1, byte[] b2)
{
if (b1.Length != b2.Length)
return false;
for(int i = 0; i < b1.Length; i++)
{
if (b1[i] != b2[i])
return false;
}
return true;
}
public static bool IsNull(this byte[] b1)
{
foreach (var byt in b1)
if (byt != 0)
return false;
return true;
}
}
}