Question

我正在寻找C语言中命令行curl的-d选项的等价物。

我想改写一下：

curl -d loginid="test" -d password="test" -d action="Login" somewebpage

我无法弄清楚这需要的C函数。

我实际上是这样做的：

curl_easy_setopt(curl, CURLOPT_URL, "webpage.com");
curl_easy_setopt(curl,CURLOPT_POSTFIELDS,login_data);

res = curl_easy_perform(curl);

login_data如下所示：

snprintf(login_data,100,"loginID=%s&password=%s",username,password);

我希望你能帮忙

问候和提前谢谢

Answer 1

如果使用--libcurl和文件名运行curl命令，它将使用文件中的libcurl保存命令的C代码。

curl --libcurl myprog.c -d loginid="test" -d password="test" -d action="Login" somewebpage

然后查看myprog.c：

/********* Sample code generated by the curl command line tool **********
 * All curl_easy_setopt() options are documented at:
 * http://curl.haxx.se/libcurl/c/curl_easy_setopt.html
 ************************************************************************/
#include <curl/curl.h>

int main(int argc, char *argv[])
{
  CURLcode ret;
  CURL *hnd;

  hnd = curl_easy_init();
  curl_easy_setopt(hnd, CURLOPT_URL, "somewebpage");
  curl_easy_setopt(hnd, CURLOPT_NOPROGRESS, 1L);
  curl_easy_setopt(hnd, CURLOPT_POSTFIELDS, "loginid=test&password=test&action=Login");
  curl_easy_setopt(hnd, CURLOPT_POSTFIELDSIZE_LARGE, (curl_off_t)39);
  curl_easy_setopt(hnd, CURLOPT_USERAGENT, "curl/7.45.0");
  curl_easy_setopt(hnd, CURLOPT_MAXREDIRS, 50L);
  curl_easy_setopt(hnd, CURLOPT_TCP_KEEPALIVE, 1L);

  /* Here is a list of options the curl code used that cannot get generated
     as source easily. You may select to either not use them or implement
     them yourself.

  CURLOPT_WRITEDATA set to a objectpointer
  CURLOPT_WRITEFUNCTION set to a functionpointer
  CURLOPT_READDATA set to a objectpointer
  CURLOPT_READFUNCTION set to a functionpointer
  CURLOPT_SEEKDATA set to a objectpointer
  CURLOPT_SEEKFUNCTION set to a functionpointer
  CURLOPT_ERRORBUFFER set to a objectpointer
  CURLOPT_STDERR set to a objectpointer
  CURLOPT_HEADERFUNCTION set to a functionpointer
  CURLOPT_HEADERDATA set to a objectpointer

  */

  ret = curl_easy_perform(hnd);

  curl_easy_cleanup(hnd);
  hnd = NULL;

  return (int)ret;
}
/**** End of sample code ****/

C中的CURL -d等价物

1 个答案: