private bool GenServerContext(AuthenticationToken token)
{
bool new_context = _new_context;
_new_context = false;
using (DisposableList list = new DisposableList())
{
SecBuffer out_sec_buffer = list.AddResource(new SecBuffer(SecBufferType.Token, 64 * 1024));
SecBufferDesc out_buffer_desc = list.AddResource(new SecBufferDesc(out_sec_buffer));
List <SecBuffer> buffers = new List <SecBuffer>();
buffers.Add(list.AddResource(new SecBuffer(SecBufferType.Token, token.ToArray())));
if (_channel_binding != null)
{
buffers.Add(list.AddResource(SecBuffer.CreateForChannelBinding(_channel_binding)));
}
SecBufferDesc in_buffer_desc = list.AddResource(new SecBufferDesc(buffers.ToArray()));
LargeInteger expiry = new LargeInteger();
SecStatusCode result = SecurityNativeMethods.AcceptSecurityContext(_creds.CredHandle, new_context ? null : _context,
in_buffer_desc, _req_flags, _data_rep, _context, out_buffer_desc, out AcceptContextRetFlags context_attr, expiry).CheckResult();
Flags = context_attr;
Expiry = expiry.QuadPart;
if (result == SecStatusCode.CompleteNeeded || result == SecStatusCode.CompleteAndContinue)
{
SecurityNativeMethods.CompleteAuthToken(_context, out_buffer_desc).CheckResult();
}
Token = AuthenticationToken.Parse(_creds.PackageName, _token_count++, false, out_buffer_desc.ToArray()[0].ToArray());
return(!(result == SecStatusCode.ContinueNeeded || result == SecStatusCode.CompleteAndContinue));
}
}
private bool GenClientContext(AuthenticationToken token)
{
using (DisposableList list = new DisposableList())
{
SecStatusCode result = 0;
SecBuffer out_sec_buffer = list.AddResource(new SecBuffer(SecBufferType.Token, 64 * 1024));
SecBufferDesc out_buffer_desc = list.AddResource(new SecBufferDesc(out_sec_buffer));
InitializeContextRetFlags flags;
LargeInteger expiry = new LargeInteger();
if (token != null)
{
List <SecBuffer> buffers = new List <SecBuffer>();
buffers.Add(list.AddResource(new SecBuffer(SecBufferType.Token, token.ToArray())));
if (_channel_binding != null)
{
buffers.Add(list.AddResource(SecBuffer.CreateForChannelBinding(_channel_binding)));
}
SecBufferDesc in_buffer_desc = list.AddResource(new SecBufferDesc(buffers.ToArray()));
result = SecurityNativeMethods.InitializeSecurityContext(_creds.CredHandle, _context, _target, _req_attributes, 0,
_data_rep, in_buffer_desc, 0, _context, out_buffer_desc, out flags, expiry).CheckResult();
Flags = flags;
}
else
{
SecBufferDesc in_buffer_desc = null;
List <SecBuffer> buffers = new List <SecBuffer>();
if (_channel_binding != null)
{
buffers.Add(list.AddResource(SecBuffer.CreateForChannelBinding(_channel_binding)));
in_buffer_desc = list.AddResource(new SecBufferDesc(buffers.ToArray()));
}
result = SecurityNativeMethods.InitializeSecurityContext(_creds.CredHandle, null, _target,
_req_attributes, 0, _data_rep, in_buffer_desc, 0, _context,
out_buffer_desc, out flags, expiry).CheckResult();
}
Expiry = expiry.QuadPart;
Flags = flags;
if (result == SecStatusCode.CompleteNeeded || result == SecStatusCode.CompleteAndContinue)
{
SecurityNativeMethods.CompleteAuthToken(_context, out_buffer_desc).CheckResult();
}
Token = AuthenticationToken.Parse(_creds.PackageName, _token_count++, true, out_buffer_desc.ToArray()[0].ToArray());
return(!(result == SecStatusCode.ContinueNeeded || result == SecStatusCode.CompleteAndContinue));
}
}
/// <summary>
/// Continue the authentication.
/// </summary>
/// <param name="token">The server token to continue authentication.</param>
/// <param name="additional_input">Additional input buffers for the continue, does not need to include the token.</param>
/// <param name="additional_output">Additional output buffers, does not need to include the token.</param>
public void Continue(AuthenticationToken token, IEnumerable <SecurityBuffer> additional_input, IEnumerable <SecurityBuffer> additional_output)
{
if (token is null)
{
throw new ArgumentNullException(nameof(token));
}
if (additional_input is null)
{
throw new ArgumentNullException(nameof(additional_input));
}
var input_buffers = new List <SecurityBuffer>
{
new SecurityBufferInOut(SecurityBufferType.Token, token.ToArray())
};
input_buffers.AddRange(additional_input);
Continue(input_buffers, additional_output);
}