1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLINFO_FILETIME 5Section: 3 6Source: libcurl 7See-also: 8 - CURLOPT_FILETIME (3) 9 - curl_easy_getinfo (3) 10 - curl_easy_setopt (3) 11Protocol: 12 - HTTP 13 - FTP 14 - SFTP 15--- 16 17# NAME 18 19CURLINFO_FILETIME_T - get the remote time of the retrieved document 20 21# SYNOPSIS 22 23~~~c 24#include <curl/curl.h> 25 26CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_FILETIME_T, 27 curl_off_t *timep); 28~~~ 29 30# DESCRIPTION 31 32Pass a pointer to a curl_off_t to receive the remote time of the retrieved 33document in number of seconds since January 1 1970 in the GMT/UTC time 34zone. If you get -1, it can be because of many reasons (it might be unknown, 35the server might hide it or the server does not support the command that tells 36document time etc) and the time of the document is unknown. 37 38You must ask libcurl to collect this information before the transfer is made, 39by using the CURLOPT_FILETIME(3) option to curl_easy_setopt(3) or 40you unconditionally get a -1 back. 41 42This option is an alternative to CURLINFO_FILETIME(3) to allow systems 43with 32 bit long variables to extract dates outside of the 32bit timestamp 44range. 45 46# EXAMPLE 47 48~~~c 49int main(void) 50{ 51 CURL *curl = curl_easy_init(); 52 if(curl) { 53 CURLcode res; 54 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); 55 /* Ask for filetime */ 56 curl_easy_setopt(curl, CURLOPT_FILETIME, 1L); 57 res = curl_easy_perform(curl); 58 if(CURLE_OK == res) { 59 curl_off_t filetime; 60 res = curl_easy_getinfo(curl, CURLINFO_FILETIME_T, &filetime); 61 if((CURLE_OK == res) && (filetime >= 0)) { 62 time_t file_time = (time_t)filetime; 63 printf("filetime: %s", ctime(&file_time)); 64 } 65 } 66 /* always cleanup */ 67 curl_easy_cleanup(curl); 68 } 69} 70~~~ 71 72# AVAILABILITY 73 74Added in 7.59.0 75 76# RETURN VALUE 77 78Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 79