/***************************************************************************
 *                                  _   _ ____  _
 *  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
 *
 ***************************************************************************/
/* <DESC>
 * Show transfer timing info after download completes.
 * </DESC>
 */
/* Example source code to show how the callback function can be used to
 * download data into a chunk of memory instead of storing it in a file.
 * After successful download we use curl_easy_getinfo() calls to get the
 * amount of downloaded bytes, the time used for the whole download, and
 * the average download speed.
 * On Linux you can create the download test files with:
 * dd if=/dev/urandom of=file_1M.bin bs=1M count=1
 *
 */
#ifdef _MSC_VER
#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS  /* for ctime() */
#endif
#endif

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#include <curl/curl.h>

#define URL_BASE "http://speedtest.your.domain/"
#define URL_1M   URL_BASE "file_1M.bin"
#define URL_2M   URL_BASE "file_2M.bin"
#define URL_5M   URL_BASE "file_5M.bin"
#define URL_10M  URL_BASE "file_10M.bin"
#define URL_20M  URL_BASE "file_20M.bin"
#define URL_50M  URL_BASE "file_50M.bin"
#define URL_100M URL_BASE "file_100M.bin"

#define CHKSPEED_VERSION "1.0"

static size_t write_cb(char *ptr, size_t size, size_t nmemb, void *data)
{
  /* we are not interested in the downloaded bytes itself,
     so we only return the size we would have saved ... */
  (void)ptr;
  (void)data;
  return size * nmemb;
}

int main(int argc, const char *argv[])
{
  CURL *curl;
  CURLcode result;
  int prtall = 0, prtsep = 0, prttime = 0;
  const char *url = URL_1M;
  const char *appname = argv[0];

  if(argc > 1) {
    /* parse input parameters */
    for(argc--, argv++; *argv; argc--, argv++) {
      if(argv[0][0] == '-') {
        switch(argv[0][1]) {
        case 'h':
        case 'H':
          fprintf(stderr,
                  "\rUsage: %s [-m=1|2|5|10|20|50|100] [-t] [-x] [url]\n",
                  appname);
          return 1;
        case 'v':
        case 'V':
          fprintf(stderr, "\r%s %s - %s\n",
                  appname, CHKSPEED_VERSION, curl_version());
          return 1;
        case 'a':
        case 'A':
          prtall = 1;
          break;
        case 'x':
        case 'X':
          prtsep = 1;
          break;
        case 't':
        case 'T':
          prttime = 1;
          break;
        case 'm':
        case 'M':
          if(argv[0][2] == '=') {
            int m = atoi((*argv) + 3);
            switch(m) {
            case 1:
              url = URL_1M;
              break;
            case 2:
              url = URL_2M;
              break;
            case 5:
              url = URL_5M;
              break;
            case 10:
              url = URL_10M;
              break;
            case 20:
              url = URL_20M;
              break;
            case 50:
              url = URL_50M;
              break;
            case 100:
              url = URL_100M;
              break;
            default:
              fprintf(stderr, "\r%s: invalid parameter %s\n",
                      appname, *argv + 3);
              return 1;
            }
            break;
          }
          fprintf(stderr, "\r%s: invalid or unknown option %s\n",
                  appname, *argv);
          return 1;
        default:
          fprintf(stderr, "\r%s: invalid or unknown option %s\n",
                  appname, *argv);
          return 1;
        }
      }
      else {
        url = *argv;
      }
    }
  }

  /* print separator line */
  if(prtsep) {
    printf("-------------------------------------------------\n");
  }
  /* print localtime */
  if(prttime) {
    time_t t = time(NULL);
    printf("Localtime: %s", ctime(&t));
  }

  /* init libcurl */
  result = curl_global_init(CURL_GLOBAL_ALL);
  if(result != CURLE_OK)
    return (int)result;

  /* init the curl session */
  curl = curl_easy_init();
  if(curl) {

    /* specify URL to get */
    curl_easy_setopt(curl, CURLOPT_URL, url);

    /* send all data to this function */
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_cb);

    /* some servers do not like requests that are made without a user-agent
       field, so we provide one */
    curl_easy_setopt(curl, CURLOPT_USERAGENT,
                     "libcurl-speedchecker/" CHKSPEED_VERSION);

    /* get it! */
    result = curl_easy_perform(curl);

    if(result == CURLE_OK) {
      curl_off_t val;

      /* check for bytes downloaded */
      result = curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD_T, &val);
      if((result == CURLE_OK) && (val > 0))
        printf("Data downloaded: %" CURL_FORMAT_CURL_OFF_T " bytes.\n", val);

      /* check for total download time */
      result = curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME_T, &val);
      if((result == CURLE_OK) && (val > 0))
        printf("Total download time: %" CURL_FORMAT_CURL_OFF_T
               ".%06" CURL_FORMAT_CURL_OFF_T " sec.\n",
               val / 1000000,
               val % 1000000);

      /* check for average download speed */
      result = curl_easy_getinfo(curl, CURLINFO_SPEED_DOWNLOAD_T, &val);
      if((result == CURLE_OK) && (val > 0))
        printf("Average download speed: "
               "%" CURL_FORMAT_CURL_OFF_T " kbyte/sec.\n",
               val / 1024);

      if(prtall) {
        /* check for name resolution time */
        result = curl_easy_getinfo(curl, CURLINFO_NAMELOOKUP_TIME_T, &val);
        if((result == CURLE_OK) && (val > 0))
          printf("Name lookup time: %" CURL_FORMAT_CURL_OFF_T
                 ".%06" CURL_FORMAT_CURL_OFF_T " sec.\n",
                 val / 1000000,
                 val % 1000000);

        /* check for connect time */
        result = curl_easy_getinfo(curl, CURLINFO_CONNECT_TIME_T, &val);
        if((result == CURLE_OK) && (val > 0))
          printf("Connect time: %" CURL_FORMAT_CURL_OFF_T
                 ".%06" CURL_FORMAT_CURL_OFF_T " sec.\n",
                 val / 1000000,
                 val % 1000000);
      }
    }
    else {
      fprintf(stderr, "Error while fetching '%s' : %s\n",
              url, curl_easy_strerror(result));
    }

    /* cleanup curl stuff */
    curl_easy_cleanup(curl);
  }

  /* we are done with libcurl, so clean it up */
  curl_global_cleanup();

  return 0;
}
