mirror of
https://github.com/curl/curl.git
synced 2024-12-15 06:40:09 +08:00
111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at https://curl.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
***************************************************************************/
|
|
/* <DESC>
|
|
* Gets a file using an SFTP URL.
|
|
* </DESC>
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <curl/curl.h>
|
|
|
|
/* define this to switch off the use of ssh-agent in this program */
|
|
#undef DISABLE_SSH_AGENT
|
|
|
|
/*
|
|
* This is an example showing how to get a single file from an SFTP server.
|
|
* It delays the actual destination file creation until the first write
|
|
* callback so that it won't create an empty file in case the remote file
|
|
* doesn't exist or something else fails.
|
|
*/
|
|
|
|
struct FtpFile {
|
|
const char *filename;
|
|
FILE *stream;
|
|
};
|
|
|
|
static size_t my_fwrite(void *buffer, size_t size, size_t nmemb,
|
|
void *stream)
|
|
{
|
|
struct FtpFile *out = (struct FtpFile *)stream;
|
|
if(!out->stream) {
|
|
/* open file for writing */
|
|
out->stream = fopen(out->filename, "wb");
|
|
if(!out->stream)
|
|
return -1; /* failure, can't open file to write */
|
|
}
|
|
return fwrite(buffer, size, nmemb, out->stream);
|
|
}
|
|
|
|
|
|
int main(void)
|
|
{
|
|
CURL *curl;
|
|
CURLcode res;
|
|
struct FtpFile ftpfile = {
|
|
"yourfile.bin", /* name to store the file as if successful */
|
|
NULL
|
|
};
|
|
|
|
curl_global_init(CURL_GLOBAL_DEFAULT);
|
|
|
|
curl = curl_easy_init();
|
|
if(curl) {
|
|
/*
|
|
* You better replace the URL with one that works!
|
|
*/
|
|
curl_easy_setopt(curl, CURLOPT_URL,
|
|
"sftp://user@server/home/user/file.txt");
|
|
/* Define our callback to get called when there's data to be written */
|
|
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_fwrite);
|
|
/* Set a pointer to our struct to pass to the callback */
|
|
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &ftpfile);
|
|
|
|
#ifndef DISABLE_SSH_AGENT
|
|
/* We activate ssh agent. For this to work you need
|
|
to have ssh-agent running (type set | grep SSH_AGENT to check) or
|
|
pageant on Windows (there is an icon in systray if so) */
|
|
curl_easy_setopt(curl, CURLOPT_SSH_AUTH_TYPES, CURLSSH_AUTH_AGENT);
|
|
#endif
|
|
|
|
/* Switch on full protocol/debug output */
|
|
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
|
|
|
|
res = curl_easy_perform(curl);
|
|
|
|
/* always cleanup */
|
|
curl_easy_cleanup(curl);
|
|
|
|
if(CURLE_OK != res) {
|
|
/* we failed */
|
|
fprintf(stderr, "curl told us %d\n", res);
|
|
}
|
|
}
|
|
|
|
if(ftpfile.stream)
|
|
fclose(ftpfile.stream); /* close the local file */
|
|
|
|
curl_global_cleanup();
|
|
|
|
return 0;
|
|
}
|