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/*****************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
*/
#include <stdio.h>
#include <string.h>
#include <curl/curl.h>
#include <curl/types.h>
#include <curl/easy.h>
/*
* This is an example showing how to check a single file's size and mtime
* from an FTP server.
*/
static size_t throw_away(void *ptr, size_t size, size_t nmemb, void *data)
{
(void)ptr;
(void)data;
/* we are not interested in the headers itself,
so we only return the size we would have saved ... */
return (size_t)(size * nmemb);
}
int main(void)
{
char ftpurl[] = "ftp://ftp.example.com/gnu/binutils/binutils-2.19.1.tar.bz2";
CURL *curl;
CURLcode res;
const time_t filetime;
const double filesize;
const char *filename = strrchr(ftpurl, '/') + 1;
curl_global_init(CURL_GLOBAL_DEFAULT);
curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, ftpurl);
/* No download if the file */
curl_easy_setopt(curl, CURLOPT_NOBODY, 1L);
/* Ask for filetime */
curl_easy_setopt(curl, CURLOPT_FILETIME, 1L);
/* No header output: TODO 14.1 http-style HEAD output for ftp */
curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, throw_away);
curl_easy_setopt(curl, CURLOPT_HEADER, 0L);
/* Switch on full protocol/debug output */
/* curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); */
res = curl_easy_perform(curl);
if(CURLE_OK == res) {
/* http://curl.haxx.se/libcurl/c/curl_easy_getinfo.html */
res = curl_easy_getinfo(curl, CURLINFO_FILETIME, &filetime);
if((CURLE_OK == res) && filetime)
printf("filetime %s: %s", filename, ctime(&filetime));
res = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &filesize);
if((CURLE_OK == res) && (filesize>0))
printf("filesize %s: %0.0f bytes\n", filename, filesize);
} else {
/* we failed */
fprintf(stderr, "curl told us %d\n", res);
}
/* always cleanup */
curl_easy_cleanup(curl);
}
curl_global_cleanup();
return 0;
}
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