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BitConverterLE.cs
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BitConverterLE.cs
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//
// Mono.Security.BitConverterLE.cs
// Like System.BitConverter but always little endian
//
// Author: Bernie Solomon
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
namespace MailKit.Security.Ntlm {
static class BitConverterLE
{
unsafe static byte[] GetULongBytes (byte *bytes)
{
if (BitConverter.IsLittleEndian)
return new [] { bytes[0], bytes[1], bytes[2], bytes[3], bytes[4], bytes[5], bytes[6], bytes[7] };
return new [] { bytes[7], bytes[6], bytes[5], bytes[4], bytes[3], bytes[2], bytes[1], bytes[0] };
}
unsafe internal static byte[] GetBytes (long value)
{
return GetULongBytes ((byte *) &value);
}
unsafe static void UShortFromBytes (byte *dst, byte[] src, int startIndex)
{
if (BitConverter.IsLittleEndian) {
dst[0] = src[startIndex];
dst[1] = src[startIndex + 1];
} else {
dst[0] = src[startIndex + 1];
dst[1] = src[startIndex];
}
}
unsafe static void UIntFromBytes (byte *dst, byte[] src, int startIndex)
{
if (BitConverter.IsLittleEndian) {
dst[0] = src[startIndex];
dst[1] = src[startIndex + 1];
dst[2] = src[startIndex + 2];
dst[3] = src[startIndex + 3];
} else {
dst[0] = src[startIndex + 3];
dst[1] = src[startIndex + 2];
dst[2] = src[startIndex + 1];
dst[3] = src[startIndex];
}
}
public unsafe static short ToInt16 (byte[] value, int startIndex)
{
short ret;
UShortFromBytes ((byte *) &ret, value, startIndex);
return ret;
}
public unsafe static int ToInt32 (byte[] value, int startIndex)
{
int ret;
UIntFromBytes ((byte *) &ret, value, startIndex);
return ret;
}
public unsafe static ushort ToUInt16 (byte[] value, int startIndex)
{
ushort ret;
UShortFromBytes ((byte *) &ret, value, startIndex);
return ret;
}
public unsafe static uint ToUInt32 (byte[] value, int startIndex)
{
uint ret;
UIntFromBytes ((byte *) &ret, value, startIndex);
return ret;
}
}
}