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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 daemontest_long_header.c
 * @brief  Testcase for libmicrohttpd handling of very long headers
 * @author Christian Grothoff
 */

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

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

/**
 * 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)
{
  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)
{
  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, unsigned int *upload_data_size,
	  void ** unused)
{
  const char *me = cls;
  struct MHD_Response *response;
  int ret;

  if (0 != strcmp (me, method))
    return MHD_NO;              /* unexpected method */
  response = MHD_create_response_from_data (strlen (url),
                                            (void *) url, MHD_NO, MHD_YES);
  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;
  long code;

  cbc.buf = buf;
  cbc.size = 2048;
  cbc.pos = 0;
  d = MHD_start_daemon (MHD_USE_SELECT_INTERNALLY /* | MHD_USE_DEBUG */ ,
                        1080,
                        &apc_all,
                        NULL,
                        &ahc_echo,
                        "GET",
                        MHD_OPTION_CONNECTION_MEMORY_LIMIT,
                        VERY_LONG / 2, MHD_OPTION_END);
  if (d == NULL)
    return 1;
  c = curl_easy_init ();
  url = malloc (VERY_LONG);
  memset (url, 'a', VERY_LONG);
  url[VERY_LONG - 1] = '\0';
  memcpy (url, "http://localhost:1080/", strlen ("http://localhost:1080/"));
  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, 2L);
  curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT, 2L);
  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);
  if (CURLE_OK == curl_easy_perform (c))
    {
      curl_easy_cleanup (c);
      MHD_stop_daemon (d);
      free (url);
      return 2;
    }
  if (CURLE_OK != curl_easy_getinfo (c, CURLINFO_RESPONSE_CODE, &code))
    {
      curl_easy_cleanup (c);
      MHD_stop_daemon (d);
      free (url);
      return 4;
    }
  curl_easy_cleanup (c);
  MHD_stop_daemon (d);
  free (url);
  if (code != MHD_HTTP_REQUEST_URI_TOO_LONG)
    return 8;
  return 0;
}


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

  cbc.buf = buf;
  cbc.size = 2048;
  cbc.pos = 0;
  d = MHD_start_daemon (MHD_USE_SELECT_INTERNALLY /* | MHD_USE_DEBUG */ ,
                        1080,
                        &apc_all,
                        NULL,
                        &ahc_echo,
                        "GET",
                        MHD_OPTION_CONNECTION_MEMORY_LIMIT,
                        VERY_LONG / 2, MHD_OPTION_END);
  if (d == NULL)
    return 16;
  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://localhost:1080/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, 2L);
  curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT, 2L);
  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);
  if (CURLE_OK == curl_easy_perform (c))
    {
      curl_easy_cleanup (c);
      MHD_stop_daemon (d);
      curl_slist_free_all (header);
      free (url);
      return 32;
    }
  if (CURLE_OK != curl_easy_getinfo (c, CURLINFO_RESPONSE_CODE, &code))
    {
      curl_slist_free_all (header);
      curl_easy_cleanup (c);
      MHD_stop_daemon (d);
      free (url);
      return 64;
    }
  curl_slist_free_all (header);
  curl_easy_cleanup (c);
  MHD_stop_daemon (d);
  free (url);
  if (code != MHD_HTTP_REQUEST_ENTITY_TOO_LARGE)
    return 128;
  return 0;
}

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

  oneone = NULL != strstr (argv[0], "11");
  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 */
}