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73 строки
2.7 KiB
Groff
73 строки
2.7 KiB
Groff
.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at https://curl.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLINFO_FILETIME 3 "November 26, 2021" "libcurl 7.83.1" "curl_easy_getinfo options"
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.SH NAME
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CURLINFO_FILETIME \- get the remote time of the retrieved document
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_FILETIME, long *timep);
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.fi
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.SH DESCRIPTION
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Pass a pointer to a long to receive the remote time of the retrieved document
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(in number of seconds since 1 jan 1970 in the GMT/UTC time zone). If you get
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-1, it can be because of many reasons (it might be unknown, the server might
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hide it or the server does not support the command that tells document time
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etc) and the time of the document is unknown.
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You must tell libcurl to collect this information before the transfer is made,
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by using the \fICURLOPT_FILETIME(3)\fP option to \fIcurl_easy_setopt(3)\fP or
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you will unconditionally get a -1 back.
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Consider using \fICURLINFO_FILETIME_T(3)\fP to be able to extract dates beyond
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the year 2038 on systems using 32 bit longs.
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.SH PROTOCOLS
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HTTP(S), FTP(S), SFTP
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.SH EXAMPLE
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.nf
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curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, url);
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/* Ask for filetime */
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curl_easy_setopt(curl, CURLOPT_FILETIME, 1L);
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res = curl_easy_perform(curl);
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if(CURLE_OK == res) {
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res = curl_easy_getinfo(curl, CURLINFO_FILETIME, &filetime);
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if((CURLE_OK == res) && (filetime >= 0)) {
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time_t file_time = (time_t)filetime;
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printf("filetime %s: %s", filename, ctime(&file_time));
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}
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}
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/* always cleanup */
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curl_easy_cleanup(curl);
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}
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.fi
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.SH AVAILABILITY
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Added in 7.5
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH "SEE ALSO"
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.BR curl_easy_getinfo "(3), " curl_easy_setopt "(3), "
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