test_libcurl.c

test_libcurl.c

/*
  test_libcurl.c

  "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx64\x64\cl.exe" -source-charset:utf-8 -execution-charset:utf-8 -EHsc -Fe.\test_libcurl.exe .\test_libcurl.c -I.\curl-7.74.0_2-win64-mingw\include -link /LIBPATH:.\ /LIBPATH:"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\lib\x64" /LIBPATH:"C:\Program Files (x86)\Windows Kits\10\Lib\10.0.17763.0\ucrt\x64" /LIBPATH:"C:\Program Files (x86)\Windows Kits\10\Lib\10.0.17763.0\um\x64" libcurl-x64.lib
  del test_libcurl.obj
  test_libcurl
------------------------------------------------------------------------
  extract
   from curl-7.74.0/win64/curl-7.74.0_2-win64-mingw.zip        3,565,580
   to curl-7.74.0_2-win64-mingw/
  copy
   from curl-7.74.0_2-win64-mingw/bin/
   to ./
    curl-ca-bundle.crt      2020-12-08  04:12      221,418
    libcurl-x64.def         2020-12-09  06:40        2,126
    libcurl-x64.dll         2020-12-09  06:40    1,288,312

  create def (skip)
  "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx64\x64\dumpbin.exe" /exports libcurl-x64.dll > libcurl-x64_tmp.def -> edit -> libcurl-x64.def

  create lib
  "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx64\x64\lib.exe" /def:libcurl-x64.def /machine:x64 /out:libcurl-x64.lib

  ready to use
    libcurl-x64.lib         2021-01-04  12:48       19,400
    libcurl-x64.exp         2021-01-04  12:48       11,280
------------------------------------------------------------------------
  dependency
    libssl-1_1-x64.dll      2020-12-08  13:21      549,496
    libcrypto-1_1-x64.dll   2020-12-08  13:21    2,815,096

    libssh2-x64.dll         2019-06-20  06:19      318,072

    libzstd.dll             2020-12-19  00:39      901,752

    libbrotlicommon.dll     2020-08-27  14:12      144,504
    libbrotlidec.dll        2020-08-27  14:12       59,512
    libbrotlienc.dll        2020-08-27  14:12      771,192
------------------------------------------------------------------------
*/

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

#include <curl/curl.h>

#define COOKIEJAR_FILE "test_libcurl_cookiejar.txt"
#define CRT_FILE "curl-ca-bundle.crt"
#define OUT_FILE "test_libcurl_out.txt"
#define TEST_URL "https://raw.githubusercontent.com/curl/curl/master/docs/examples/getinmemory.c"

typedef struct _Mngr {
  size_t len;
  char dat[2048];
  FILE *fp;
} Mngr;

size_t cb_write(char *buf, size_t sz, size_t n, void *p)
{
  Mngr *m = (Mngr *)p;
  size_t wb = sz * n;
  if(wb >= sizeof(m->dat) - 1) return 0;
  memcpy(m->dat, buf, wb);
  m->dat[wb] = '\0';
  fprintf(stdout, "\n----\nRead %zu bytes.\n[%s]\n----\n", wb, m->dat);
  fwrite(m->dat, wb, 1, m->fp); // includes HTTP headers and CRLF
  return wb;
}

int main(int ac, char **av)
{
  fprintf(stdout, "sizeof(size_t): %zu\n", sizeof(size_t));
  curl_global_init(CURL_GLOBAL_ALL); // CURL_GLOBAL_WIN32 | CURL_GLOBAL_SSL
  CURL *hc = curl_easy_init();
  Mngr m = {0, {'\0'}};
  m.fp = fopen(OUT_FILE, "wb");
  m.dat[sizeof(m.dat) - 1] = '\0';
  curl_easy_setopt(hc, CURLOPT_WRITEDATA, &m);
  curl_easy_setopt(hc, CURLOPT_WRITEFUNCTION, cb_write);
  // curl_easy_setopt(hc, CURLOPT_DEBUGFUNCTION, dbg);
  curl_easy_setopt(hc, CURLOPT_VERBOSE, 1);
  curl_easy_setopt(hc, CURLOPT_HEADER, 1);
  curl_easy_setopt(hc, CURLOPT_NOPROGRESS, 1);
  curl_easy_setopt(hc, CURLOPT_TCP_KEEPALIVE, 1);
  curl_easy_setopt(hc, CURLOPT_MAXREDIRS, 50);
  curl_easy_setopt(hc, CURLOPT_USERAGENT, "curl/7.74.0");
  curl_easy_setopt(hc, CURLOPT_HTTP_VERSION, (long)CURL_HTTP_VERSION_2TLS);
#if 0
  curl_easy_setopt(hc, CURLOPT_SSL_VERIFYPEER, 0); // *** CAUTION ***
#else
  curl_easy_setopt(hc, CURLOPT_CAINFO, CRT_FILE);
#endif
  curl_easy_setopt(hc, CURLOPT_COOKIEJAR, COOKIEJAR_FILE);
  curl_easy_setopt(hc, CURLOPT_URL, TEST_URL);
  CURLcode r = curl_easy_perform(hc); // calls curl_global_init()
  fclose(m.fp);
  curl_easy_cleanup(hc);
  curl_global_cleanup();
  return 0; // return r;
}