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SMBServer v1.0.5

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Tal Aloni 2016-12-22 20:51:16 +02:00
parent b75820452d
commit bd1006cb81
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126
Utilities/Conversion/BigEndianConverter.cs Normal file
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using System;
using System.Collections.Generic;
using System.Text;
namespace Utilities
{
public class BigEndianConverter
{
public static ushort ToUInt16(byte[] buffer, int offset)
{
return (ushort)((buffer[offset + 0] << 8) | (buffer[offset + 1] << 0));
}
public static short ToInt16(byte[] buffer, int offset)
{
return (short)ToUInt16(buffer, offset);
}
public static uint ToUInt32(byte[] buffer, int offset)
{
return (uint)((buffer[offset + 0] << 24) | (buffer[offset + 1] << 16)
| (buffer[offset + 2] << 8) | (buffer[offset + 3] << 0));
}
public static int ToInt32(byte[] buffer, int offset)
{
return (int)ToUInt32(buffer, offset);
}
public static ulong ToUInt64(byte[] buffer, int offset)
{
return (((ulong)ToUInt32(buffer, offset + 0)) << 32) | ToUInt32(buffer, offset + 4);
}
public static long ToInt64(byte[] buffer, int offset)
{
return (long)ToUInt64(buffer, offset);
}
public static Guid ToGuid(byte[] buffer, int offset)
{
return new Guid(
ToUInt32(buffer, offset + 0),
ToUInt16(buffer, offset + 4),
ToUInt16(buffer, offset + 6),
buffer[offset + 8],
buffer[offset + 9],
buffer[offset + 10],
buffer[offset + 11],
buffer[offset + 12],
buffer[offset + 13],
buffer[offset + 14],
buffer[offset + 15]);
}
public static byte[] GetBytes(ushort value)
{
byte[] result = new byte[2];
result[0] = (byte)((value >> 8) & 0xFF);
result[1] = (byte)((value >> 0) & 0xFF);
return result;
}
public static byte[] GetBytes(short value)
{
return GetBytes((ushort)value);
}
public static byte[] GetBytes(uint value)
{
byte[] result = new byte[4];
result[0] = (byte)((value >> 24) & 0xFF);
result[1] = (byte)((value >> 16) & 0xFF);
result[2] = (byte)((value >> 8) & 0xFF);
result[3] = (byte)((value >> 0) & 0xFF);
return result;
}
public static byte[] GetBytes(int value)
{
return GetBytes((uint)value);
}
public static byte[] GetBytes(ulong value)
{
byte[] result = new byte[8];
Array.Copy(GetBytes((uint)(value >> 32)), 0, result, 0, 4);
Array.Copy(GetBytes((uint)(value & 0xFFFFFFFF)), 0, result, 4, 4);
return result;
}
public static byte[] GetBytes(long value)
{
return GetBytes((ulong)value);
}
public static byte[] GetBytes(Guid value)
{
byte[] result = value.ToByteArray();
if (BitConverter.IsLittleEndian)
{
// reverse first 4 bytes
byte temp = result[0];
result[0] = result[3];
result[3] = temp;
temp = result[1];
result[1] = result[2];
result[2] = temp;
// reverse next 2 bytes
temp = result[4];
result[4] = result[5];
result[5] = temp;
// reverse next 2 bytes
temp = result[6];
result[6] = result[7];
result[7] = temp;
}
return result;
}
}
}