Tribblix: manual page: CURLINFO_FILETIME

CURLINFO_FILETIME_T(3) Introduction to Library Functions

NAME

CURLINFO_FILETIME_T - get the remote time of the retrieved document

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_FILETIME_T,
curl_off_t *timep);

DESCRIPTION

Pass a pointer to a curl_off_t 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.

This option is an alternative to CURLINFO_FILETIME(3) to allow
systems with 32 bit long variables to extract dates outside of the
32-bit timestamp range.

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) {
curl_off_t filetime;
res = curl_easy_getinfo(curl, CURLINFO_FILETIME_T, &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 7.59.0

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).