public byte[] Accept(byte[] token)
{
// TODO: A SecBufferDesc builder would be nice
var incomingToken = new SecurityBufferDescription
{
Version = 0,
Buffers = new[]
{
new SecurityBuffer
{
Buffer = token,
BufferType = SecurityBufferType.SECBUFFER_TOKEN
}
}
};
var outgoingToken = new SecurityBufferDescription
{
Version = 0,
Buffers = new[]
{
new SecurityBuffer
{
// we need should query the sec package for them
Buffer = new byte[64000],
BufferType = SecurityBufferType.SECBUFFER_TOKEN
}
}
};
var result = SspiInterop.AcceptSecurityContext(
ref _credentials,
IntPtr.Zero,
incomingToken,
HTTP_SECURITY_ATTRIBUTES,
SspiInterop.SECURITY_NETWORK_DREP,
ref _context,
outgoingToken,
out var attributes,
out var expiry);
if (result == SspiInterop.SEC_E_OK || result == SspiInterop.SEC_I_COMPLETE_AND_CONTINUE)
{
IsEstablished = true;
Principal = GetPrincipalNameFromContext(_context);
Roles = GetGroupMembershipFromContext(_context);
if (result == SspiInterop.SEC_E_OK)
{
return(new byte[0]);
}
}
if (result == SspiInterop.SEC_I_COMPLETE_AND_CONTINUE || result == SspiInterop.SEC_I_CONTINUE_NEEDED)
{
return(outgoingToken.Buffers
.FirstOrDefault(buffer => buffer.BufferType == SecurityBufferType.SECBUFFER_TOKEN)
.Buffer);
}
throw new AuthenticationException($"The SSPI Negotiate package was unable to accept the supplied authentication token (SSPI Status: {result})");
}
public byte[] Initiate(byte[] token)
{
var outgoingToken = new SecurityBufferDescription
{
Version = 0,
Buffers = new[]
{
new SecurityBuffer
{
Buffer = new byte[64000],
BufferType = SecurityBufferType.SECBUFFER_TOKEN
}
}
};
//var att = SspiInterop.ISC_REQ_USE_SUPPLIED_CREDS;
var result = SspiInterop.InitializeSecurityContext(
ref _credentials,
IntPtr.Zero,
_target,
0,
0,
0,
IntPtr.Zero,
0,
ref _context,
outgoingToken,
out var attribute,
out var expiry);
if (result != 0)
{
Console.WriteLine($"InitializeSecurityContext returned {result}");
Console.WriteLine(BitConverter.ToString(outgoingToken.Buffers[0].Buffer));
}
return outgoingToken.Buffers
.FirstOrDefault(buffer => buffer.BufferType == SecurityBufferType.SECBUFFER_TOKEN)
.Buffer;
}
