/*
     This file is part of libmicrohttpd
     Copyright (C) 2007, 2008 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 test_long_header.c
 * @brief  Testcase for libmicrohttpd handling of very long headers
 * @author Christian Grothoff
 */

#include "MHD_config.h"
#include "platform.h"
#include <curl/curl.h>
#include <microhttpd.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#ifndef WINDOWS
#include <unistd.h>
#endif

#include "socat.c"

/**
 * We will set the memory available per connection to
 * half of this value, so the actual value does not have
 * to be big at all...
 */
#define VERY_LONG (1024*10)

static int oneone;

static int
apc_all (void *cls, const struct sockaddr *addr, socklen_t addrlen)
{
  (void)cls;(void)addr;(void)addrlen;   /* Unused. Silent compiler warning. */
  return MHD_YES;
}

struct CBC
{
  char *buf;
  size_t pos;
  size_t size;
};

static size_t
copyBuffer (void *ptr, size_t size, size_t nmemb, void *ctx)
{
  (void)ptr;(void)ctx;  /* Unused. Silent compiler warning. */
  return size * nmemb;
}

static int
ahc_echo (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 **unused)
{
  const char *me = cls;
  struct MHD_Response *response;
  int ret;
  (void)version;(void)upload_data;      /* Unused. Silent compiler warning. */
  (void)upload_data_size;(void)unused;  /* Unused. Silent compiler warning. */

  if (0 != strcmp (me, method))
    return MHD_NO;              /* unexpected method */
  response = MHD_create_response_from_buffer (strlen (url),
					      (void *) url,
					      MHD_RESPMEM_MUST_COPY);
  ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
  MHD_destroy_response (response);
  return ret;
}


static int
testLongUrlGet ()
{
  struct MHD_Daemon *d;
  CURL *c;
  char buf[2048];
  struct CBC cbc;
  char *url;
  int i;

  cbc.buf = buf;
  cbc.size = 2048;
  cbc.pos = 0;
  d = MHD_start_daemon (MHD_USE_INTERNAL_POLLING_THREAD /* | MHD_USE_ERROR_LOG */ ,
                        11080,
                        &apc_all,
                        NULL,
                        &ahc_echo,
                        "GET",
                        MHD_OPTION_CONNECTION_MEMORY_LIMIT,
                        (size_t) (VERY_LONG / 2), MHD_OPTION_END);

  if (d == NULL)
    return 1;
  zzuf_socat_start ();
  for (i = 0; i < LOOP_COUNT; i++)
    {
      fprintf (stderr, ".");

      c = curl_easy_init ();
      url = malloc (VERY_LONG);
      memset (url, 'a', VERY_LONG);
      url[VERY_LONG - 1] = '\0';
      memcpy (url, "http://127.0.0.1:11081/",
              strlen ("http://127.0.0.1:11081/"));
      curl_easy_setopt (c, CURLOPT_URL, url);
      curl_easy_setopt (c, CURLOPT_WRITEFUNCTION, &copyBuffer);
      curl_easy_setopt (c, CURLOPT_WRITEDATA, &cbc);
      curl_easy_setopt (c, CURLOPT_FAILONERROR, 1);
      curl_easy_setopt (c, CURLOPT_TIMEOUT_MS, CURL_TIMEOUT);
      curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT_MS, CURL_TIMEOUT);
      if (oneone)
        curl_easy_setopt (c, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
      else
        curl_easy_setopt (c, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
      /* NOTE: use of CONNECTTIMEOUT without also
       *   setting NOSIGNAL results in really weird
       *   crashes on my system! */
      curl_easy_setopt (c, CURLOPT_NOSIGNAL, 1);
      curl_easy_perform (c);
      curl_easy_cleanup (c);
    }
  fprintf (stderr, "\n");
  zzuf_socat_stop ();

  MHD_stop_daemon (d);
  free (url);
  return 0;
}


static int
testLongHeaderGet ()
{
  struct MHD_Daemon *d;
  CURL *c;
  char buf[2048];
  struct CBC cbc;
  char *url;
  struct curl_slist *header = NULL;
  int i;

  cbc.buf = buf;
  cbc.size = 2048;
  cbc.pos = 0;
  d = MHD_start_daemon (MHD_USE_INTERNAL_POLLING_THREAD /* | MHD_USE_ERROR_LOG */ ,
                        11080,
                        &apc_all,
                        NULL,
                        &ahc_echo,
                        "GET",
                        MHD_OPTION_CONNECTION_MEMORY_LIMIT,
                        (size_t) (VERY_LONG / 2), MHD_OPTION_END);
  if (d == NULL)
    return 16;
  zzuf_socat_start ();
  for (i = 0; i < LOOP_COUNT; i++)
    {
      fprintf (stderr, ".");
      c = curl_easy_init ();
      url = malloc (VERY_LONG);
      memset (url, 'a', VERY_LONG);
      url[VERY_LONG - 1] = '\0';
      url[VERY_LONG / 2] = ':';
      url[VERY_LONG / 2 + 1] = ' ';
      header = curl_slist_append (header, url);

      curl_easy_setopt (c, CURLOPT_HTTPHEADER, header);
      curl_easy_setopt (c, CURLOPT_URL, "http://127.0.0.1:11081/hello_world");
      curl_easy_setopt (c, CURLOPT_WRITEFUNCTION, &copyBuffer);
      curl_easy_setopt (c, CURLOPT_WRITEDATA, &cbc);
      curl_easy_setopt (c, CURLOPT_FAILONERROR, 1);
      curl_easy_setopt (c, CURLOPT_TIMEOUT_MS, CURL_TIMEOUT);
      curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT_MS, CURL_TIMEOUT);
      if (oneone)
        curl_easy_setopt (c, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
      else
        curl_easy_setopt (c, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
      /* NOTE: use of CONNECTTIMEOUT without also
       *   setting NOSIGNAL results in really weird
       *   crashes on my system! */
      curl_easy_setopt (c, CURLOPT_NOSIGNAL, 1);
      curl_easy_perform (c);
      curl_slist_free_all (header);
      header = NULL;
      curl_easy_cleanup (c);
    }
  fprintf (stderr, "\n");
  zzuf_socat_stop ();

  MHD_stop_daemon (d);
  free (url);
  return 0;
}


int
main (int argc, char *const *argv)
{
  unsigned int errorCount = 0;
  (void)argc;   /* Unused. Silent compiler warning. */

  oneone = (NULL != strrchr (argv[0], (int) '/')) ?
    (NULL != strstr (strrchr (argv[0], (int) '/'), "11")) : 0;
  if (0 != curl_global_init (CURL_GLOBAL_WIN32))
    return 2;
  errorCount += testLongUrlGet ();
  errorCount += testLongHeaderGet ();
  if (errorCount != 0)
    fprintf (stderr, "Error (code: %u)\n", errorCount);
  curl_global_cleanup ();
  return errorCount != 0;       /* 0 == pass */
}
