/*

 This file is part of libmicrohttpd

 Copyright (C) 2007, 2016 Christian Grothoff

 libmicrohttpd is free software; you can redistribute it and/or modify

 it under the terms of the GNU General Public License as published

 by the Free Software Foundation; either version 2, or (at your

 option) any later version.

 libmicrohttpd is distributed in the hope that it will be useful, but

 WITHOUT ANY WARRANTY; without even the implied warranty of

 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 General Public License for more details.

 You should have received a copy of the GNU General Public License

 along with libmicrohttpd; see the file COPYING.  If not, write to the

 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 Boston, MA 02110-1301, USA.

 */

/**

 * @file mhds_session_info_test.c

 * @brief  Testcase for libmicrohttpd HTTPS connection querying operations

 * @author Sagie Amir

 */

#include "platform.h"

#include "microhttpd.h"

#include <curl/curl.h>

#ifdef MHD_HTTPS_REQUIRE_GRYPT

#include <gcrypt.h>

#endif /* MHD_HTTPS_REQUIRE_GRYPT */

#include "tls_test_common.h"

extern const char srv_key_pem[];

extern const char srv_self_signed_cert_pem[];

struct MHD_Daemon *d;

/*

 * HTTP access handler call back

 * used to query negotiated security parameters

 */

static int

query_session_ahc (void *cls, struct MHD_Connection *connection,

                   const char *url, const char *method,

                   const char *version, const char *upload_data,

                   size_t *upload_data_size, void **ptr)

{

  struct MHD_Response *response;

  int ret;

  (void)cls;(void)url;(void)method;(void)version;       /* Unused. Silent compiler warning. */

  (void)upload_data;(void)upload_data_size;             /* Unused. Silent compiler warning. */

  if (NULL == *ptr)

    {

      *ptr = (void*)&query_session_ahc;

      return MHD_YES;

    }

  if (GNUTLS_TLS1_1 !=

      (ret = MHD_get_connection_info

       (connection,

	MHD_CONNECTION_INFO_PROTOCOL)->protocol))

    {

      if (GNUTLS_TLS1_2 == ret)

      {

        /* as usual, TLS implementations sometimes don't

           quite do what was asked, just mildly complain... */

        fprintf (stderr,

                 "Warning: requested TLS 1.1, got TLS 1.2\n");

      }

      else

      {

        /* really different version... */

        fprintf (stderr,

                 "Error: requested protocol mismatch (wanted %d, got %d)\n",

                 GNUTLS_TLS1_1,

                 ret);

        return -1;

      }

    }

  response = MHD_create_response_from_buffer (strlen (EMPTY_PAGE),

					      (void *) EMPTY_PAGE,

					      MHD_RESPMEM_PERSISTENT);

  ret = MHD_queue_response (connection, MHD_HTTP_OK, response);

  MHD_destroy_response (response);

  return ret;

}

/**

 * negotiate a secure connection with server & query negotiated security parameters

 */

#if LIBCURL_VERSION_NUM >= 0x072200

static int

test_query_session ()

{

  CURL *c;

  struct CBC cbc;

  CURLcode errornum;

  char url[256];

  int port;

  if (MHD_NO != MHD_is_feature_supported (MHD_FEATURE_AUTODETECT_BIND_PORT))

    port = 0;

  else

    port = 3060;

  if (NULL == (cbc.buf = malloc (sizeof (char) * 255)))

    return 16;

  cbc.size = 255;

  cbc.pos = 0;

  /* setup test */

  d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_TLS |

                        MHD_USE_ERROR_LOG, port,

                        NULL, NULL, &query_session_ahc, NULL,

			MHD_OPTION_HTTPS_PRIORITIES, "NORMAL:+ARCFOUR-128",

                        MHD_OPTION_HTTPS_MEM_KEY, srv_key_pem,

                        MHD_OPTION_HTTPS_MEM_CERT, srv_self_signed_cert_pem,

                        MHD_OPTION_END);

  if (d == NULL)

    {

      free (cbc.buf);

      return 2;

    }

  if (0 == port)

    {

      const union MHD_DaemonInfo *dinfo;

      dinfo = MHD_get_daemon_info (d, MHD_DAEMON_INFO_BIND_PORT);

      if (NULL == dinfo || 0 == dinfo->port)

        { MHD_stop_daemon (d); return 32; }

      port = (int)dinfo->port;

    }

  const char *aes256_sha = "AES256-SHA";

  if (curl_uses_nss_ssl() == 0)

    {

      aes256_sha = "rsa_aes_256_sha";

    }

  gen_test_file_url (url,

                     sizeof (url),

                     port);

  c = curl_easy_init ();

#if DEBUG_HTTPS_TEST

  curl_easy_setopt (c, CURLOPT_VERBOSE, 1);

#endif

  curl_easy_setopt (c, CURLOPT_URL, url);

  curl_easy_setopt (c, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);

  curl_easy_setopt (c, CURLOPT_TIMEOUT, 10L);

  curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT, 10L);

  curl_easy_setopt (c, CURLOPT_WRITEFUNCTION, &copyBuffer);

  curl_easy_setopt (c, CURLOPT_FILE, &cbc);

  /* TLS options */

  curl_easy_setopt (c, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_1);

  curl_easy_setopt (c, CURLOPT_SSL_CIPHER_LIST, aes256_sha);

  /* currently skip any peer authentication */

  curl_easy_setopt (c, CURLOPT_SSL_VERIFYPEER, 0);

  curl_easy_setopt (c, CURLOPT_SSL_VERIFYHOST, 0);

  curl_easy_setopt (c, CURLOPT_FAILONERROR, 1);

  /* NOTE: use of CONNECTTIMEOUT without also

   * setting NOSIGNAL results in really weird

   * crashes on my system! */

  curl_easy_setopt (c, CURLOPT_NOSIGNAL, 1);

  if (CURLE_OK != (errornum = curl_easy_perform (c)))

    {

      fprintf (stderr, "curl_easy_perform failed: `%s'\n",

               curl_easy_strerror (errornum));

      MHD_stop_daemon (d);

      curl_easy_cleanup (c);

      free (cbc.buf);

      return -1;

    }

  curl_easy_cleanup (c);

  MHD_stop_daemon (d);

  free (cbc.buf);

  return 0;

}

#endif

int

main (int argc, char *const *argv)

{

#if LIBCURL_VERSION_NUM >= 0x072200

  unsigned int errorCount = 0;

  const char *ssl_version;

  (void)argc;   /* Unused. Silent compiler warning. */

#ifdef MHD_HTTPS_REQUIRE_GRYPT

  gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0);

#ifdef GCRYCTL_INITIALIZATION_FINISHED

  gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);

#endif

#endif /* MHD_HTTPS_REQUIRE_GRYPT */

  if (!testsuite_curl_global_init ())

    return 99;

  ssl_version = curl_version_info (CURLVERSION_NOW)->ssl_version;

  if (NULL == ssl_version)

  {

    fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");

    curl_global_cleanup ();

    return 77;

  }

  if (0 != strncmp (ssl_version, "GnuTLS", 6))

  {

    fprintf (stderr, "This test can be run only with libcurl-gnutls.\n");

    curl_global_cleanup ();

    return 77;

  }

  errorCount += test_query_session ();

  print_test_result (errorCount, argv[0]);

  curl_global_cleanup ();

  return errorCount != 0 ? 1 : 0;

#else  /* LIBCURL_VERSION_NUM < 0x072200 */

  return 77;

#endif /* LIBCURL_VERSION_NUM < 0x072200 */

}