// http://pss821213.blog.me/40114552784
화면출력대신 메모리 변수에 출력하여 개발할 때 사용할 수 있도록 완성한 소스를 올려본다
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <curl/curl.h>
struct MemoryStruct
{
char *memory;
size_t size;
};
static size_t WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data)
{
size_t realsize = size * nmemb;
struct MemoryStruct *mem = (struct MemoryStruct *)data;
mem->memory = realloc(mem->memory, mem->size + realsize + 1);
if (mem->memory == NULL)
{
/* out of memory! */
printf("not enough memory (realloc returned NULL)\n");
exit(-1);
}
memcpy(&(mem->memory[mem->size]), ptr, realsize);
mem->size += realsize;
mem->memory[mem->size] = 0;
return realsize;
}
int main(void)
{
CURL *curl;
CURLcode res;
struct MemoryStruct chunk;
chunk.memory = malloc(1); /* will be grown as needed by the realloc above */
chunk.size = 0; /* no data at this point */
curl_global_init(CURL_GLOBAL_ALL);
/* init the curl session */
curl = curl_easy_init();
if(curl)
{
/* specify URL to get */
curl_easy_setopt(curl, CURLOPT_URL, https://www.cia.gov/);
#ifdef SKIP_PEER_VERIFICATION
/*
* If you want to connect to a site who isn't using a certificate that is
* signed by one of the certs in the CA bundle you have, you can skip the
* verification of the server's certificate. This makes the connection
* A LOT LESS SECURE.
*
* If you have a CA cert for the server stored someplace else than in the
* default bundle, then the CURLOPT_CAPATH option might come handy for
* you.
*/
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
#endif
#ifdef SKIP_HOSTNAME_VERFICATION
/*
* If the site you're connecting to uses a different host name that what
* they have mentioned in their server certificate's commonName (or
* subjectAltName) fields, libcurl will refuse to connect. You can skip
* this check, but this will make the connection less secure.
*/
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
#endif
/* send all data to this function */
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
/* we pass our 'chunk' struct to the callback function */
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
/* get it! */
res = curl_easy_perform(curl);
printf("%d\n", res);
/* always cleanup */
curl_easy_cleanup(curl);
/* 여기서 처리 */
/* chunk.memory 포인터를 접근하면 응답받은 데이터를 사용할 수 있다. */
/* 주의점: 동적메모리할당을 해서 사용중이므로 다 썼으면 free 해 주어야 한다. */
printf("%lu bytes retrieved\n", chunk.size);
printf("%s\n", chunk.memory);
if (chunk.memory)
{
free(chunk.memory);
}
}
/* we're done with libcurl, so clean it up */
curl_global_cleanup();
return 0;
}
