/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at https://curl.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * SPDX-License-Identifier: curl
 *
 * RFC4178 Simple and Protected GSS-API Negotiation Mechanism
 *
 ***************************************************************************/
#include "curl_setup.h"

#if defined(USE_WINDOWS_SSPI) && defined(USE_SPNEGO)

#include "vauth/vauth.h"
#include "curlx/base64.h"
#include "curl_trc.h"
#include "strerror.h"

/*
 * Curl_auth_is_spnego_supported()
 *
 * This is used to evaluate if SPNEGO (Negotiate) is supported.
 *
 * Parameters: None
 *
 * Returns TRUE if Negotiate is supported by Windows SSPI.
 */
bool Curl_auth_is_spnego_supported(void)
{
  PSecPkgInfo SecurityPackage;
  SECURITY_STATUS status;

  /* Query the security package for Negotiate */
  status = Curl_pSecFn->QuerySecurityPackageInfo(
