CURLINFO_FILETIME - get the remote time of the retrieved document
#include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_FILETIME, long *timep);
CURLINFO_FILETIME(3) curl_easy_getinfo options 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 1 jan 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 tell libcurl to collect this information before the transfer is made, by using the CURLOPT_FILETIME(3) option to curl_easy_setopt(3) or you will unconditionally get a -1 back. Consider using CURLINFO_FILETIME_T(3) to be able to extract dates beyond the year 2038 on systems using 32 bit longs. PROTOCOLS HTTP(S), FTP(S), SFTP EXAMPLE curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, url); /* Ask for filetime */ curl_easy_setopt(curl, CURLOPT_FILETIME, 1L); res = curl_easy_perform(curl); if(CURLE_OK == res) { res = curl_easy_getinfo(curl, CURLINFO_FILETIME, &filetime); if((CURLE_OK == res) && (filetime >= 0)) { time_t file_time = (time_t)filetime; printf("filetime %s: %s", filename, ctime(&file_time)); } } /* always cleanup */ curl_easy_cleanup(curl); } AVAILABILITY Added in 7.5 RETURN VALUE Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | web/curl | +---------------+------------------+ |Stability | Uncommitted | +---------------+------------------+ SEE ALSO curl_easy_getinfo(3), curl_easy_setopt(3), NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://curl.se/down- load/curl-7.83.1.tar.bz2. Further information about this software can be found on the open source community website at http://curl.haxx.se/. libcurl 7.83.1 November 26, 2021 CURLINFO_FILETIME(3)