Tribblix: manual page: CURLINFO

CURLINFO_FILETIME(3) Introduction to Library Functions CURLINFO_FILETIME(3)

NAME

CURLINFO_FILETIME - get the remote time of the retrieved document

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_FILETIME, long *timep);

DESCRIPTION

Pass a pointer to a long to receive the remote time of the retrieved
document in number of seconds since January 1 1970 in the GMT/UTC
time zone. If you get -1, it can be because of many reasons (it might
be unknown, the server might hide it or the server does not support
the command that tells document time etc) and the time of the
document is unknown.

You must ask libcurl to collect this information before the transfer
is made, by using the CURLOPT_FILETIME(3) option or you
unconditionally get a -1 back.

Consider CURLINFO_FILETIME_T(3) instead to be able to extract dates
beyond the year 2038 on systems using 32-bit longs (Windows).

PROTOCOLS

This functionality affects ftp, http and sftp

EXAMPLE

int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
/* Ask for filetime */
curl_easy_setopt(curl, CURLOPT_FILETIME, 1L);
res = curl_easy_perform(curl);
if(CURLE_OK == res) {
long filetime = 0;
res = curl_easy_getinfo(curl, CURLINFO_FILETIME, &filetime);
if((CURLE_OK == res) && (filetime >= 0)) {
time_t file_time = (time_t)filetime;
printf("filetime: %s", ctime(&file_time));
}
}
/* always cleanup */
curl_easy_cleanup(curl);
}
}

AVAILABILITY

Added in curl 7.5

RETURN VALUE

curl_easy_getinfo(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error
occurred, see libcurl-errors(3).