94 строки
2.9 KiB
C
94 строки
2.9 KiB
C
/***************************************************************************
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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) 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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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <curl/curl.h>
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/* <DESC>
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* Checks a single file's size and mtime from an FTP server.
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* </DESC>
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*/
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static size_t throw_away(void *ptr, size_t size, size_t nmemb, void *data)
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{
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(void)ptr;
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(void)data;
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/* we are not interested in the headers itself,
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so we only return the size we would have saved ... */
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return (size_t)(size * nmemb);
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}
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int main(void)
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{
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char ftpurl[] = "ftp://ftp.example.com/gnu/binutils/binutils-2.19.1.tar.bz2";
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CURL *curl;
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CURLcode res;
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long filetime = -1;
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curl_off_t filesize = 0;
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const char *filename = strrchr(ftpurl, '/') + 1;
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curl_global_init(CURL_GLOBAL_DEFAULT);
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curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, ftpurl);
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/* No download if the file */
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curl_easy_setopt(curl, CURLOPT_NOBODY, 1L);
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/* Ask for filetime */
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curl_easy_setopt(curl, CURLOPT_FILETIME, 1L);
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curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, throw_away);
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curl_easy_setopt(curl, CURLOPT_HEADER, 0L);
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/* Switch on full protocol/debug output */
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/* curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); */
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res = curl_easy_perform(curl);
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if(CURLE_OK == res) {
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/* https://curl.se/libcurl/c/curl_easy_getinfo.html */
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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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res = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T,
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&filesize);
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if((CURLE_OK == res) && (filesize>0))
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printf("filesize %s: %" CURL_FORMAT_CURL_OFF_T " bytes\n",
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filename, filesize);
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}
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else {
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/* we failed */
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fprintf(stderr, "curl told us %d\n", res);
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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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curl_global_cleanup();
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return 0;
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}
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