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/*
 This file is part of libmicrohttpd
 (C) 2007 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., 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, 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>
#include <gcrypt.h>
#include "tls_test_common.h"

extern int curl_check_version (const char *req_version, ...);
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 *upload_data, const char *version,
                   size_t *upload_data_size, void **ptr)
{
  struct MHD_Response *response;
  int ret;
  
  if (NULL == *ptr)
    {
      *ptr = &query_session_ahc;
      return MHD_YES;
    }

  if (GNUTLS_SSL3 != 
      (ret = MHD_get_connection_info
       (connection,
	MHD_CONNECTION_INFO_PROTOCOL)->protocol))
    {
      fprintf (stderr, "Error: requested protocol mismatch (wanted %d, got %d)\n",
               GNUTLS_SSL3,
	       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
 */
static int
test_query_session ()
{
  CURL *c;
  struct CBC cbc;
  CURLcode errornum;
  char url[256];

  if (NULL == (cbc.buf = malloc (sizeof (char) * 255)))
    return 16;
  cbc.size = 255;
  cbc.pos = 0;

  gen_test_file_url (url, DEAMON_TEST_PORT);

  /* setup test */
  d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_SSL |
                        MHD_USE_DEBUG, DEAMON_TEST_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)
    return 2;

  const char *aes256_sha = "AES256-SHA";
  if (curl_uses_nss_ssl() == 0)
    {
      aes256_sha = "rsa_aes_256_sha";
    }

  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_SSLv3);
  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;
}


GCRY_THREAD_OPTION_PTHREAD_IMPL;


int
main (int argc, char *const *argv)
{
  unsigned int errorCount = 0;

  gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0);
  gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
#ifdef GCRYCTL_INITIALIZATION_FINISHED
  gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
#endif
  if (0 != curl_global_init (CURL_GLOBAL_ALL))
    {
      fprintf (stderr, "Error (code: %u)\n", errorCount);
      return -1;
    }
  errorCount += test_query_session ();
  print_test_result (errorCount, argv[0]);
  curl_global_cleanup ();
  if (errorCount > 0)
    fprintf (stderr, "Error (code: %u)\n", errorCount);
  return errorCount;
}