1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24
25 #include <stdio.h>
26
27 #include <curl/curl.h>
28
29 /* <DESC>
30 * Get a single file from an FTPS server.
31 * </DESC>
32 */
33
34 struct FtpFile {
35 const char *filename;
36 FILE *stream;
37 };
38
my_fwrite(void * buffer,size_t size,size_t nmemb,void * stream)39 static size_t my_fwrite(void *buffer, size_t size, size_t nmemb,
40 void *stream)
41 {
42 struct FtpFile *out = (struct FtpFile *)stream;
43 if(!out->stream) {
44 /* open file for writing */
45 out->stream = fopen(out->filename, "wb");
46 if(!out->stream)
47 return 0; /* failure, cannot open file to write */
48 }
49 return fwrite(buffer, size, nmemb, out->stream);
50 }
51
52
main(void)53 int main(void)
54 {
55 CURL *curl;
56 CURLcode res;
57 struct FtpFile ftpfile = {
58 "yourfile.bin", /* name to store the file as if successful */
59 NULL
60 };
61
62 curl_global_init(CURL_GLOBAL_DEFAULT);
63
64 curl = curl_easy_init();
65 if(curl) {
66 /*
67 * You better replace the URL with one that works! Note that we use an
68 * FTP:// URL with standard explicit FTPS. You can also do FTPS:// URLs if
69 * you want to do the rarer kind of transfers: implicit.
70 */
71 curl_easy_setopt(curl, CURLOPT_URL,
72 "ftp://user@server/home/user/file.txt");
73 /* Define our callback to get called when there is data to be written */
74 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_fwrite);
75 /* Set a pointer to our struct to pass to the callback */
76 curl_easy_setopt(curl, CURLOPT_WRITEDATA, &ftpfile);
77
78 /* We activate SSL and we require it for both control and data */
79 curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_ALL);
80
81 /* Switch on full protocol/debug output */
82 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
83
84 res = curl_easy_perform(curl);
85
86 /* always cleanup */
87 curl_easy_cleanup(curl);
88
89 if(CURLE_OK != res) {
90 /* we failed */
91 fprintf(stderr, "curl told us %d\n", res);
92 }
93 }
94
95 if(ftpfile.stream)
96 fclose(ftpfile.stream); /* close the local file */
97
98 curl_global_cleanup();
99
100 return 0;
101 }
102
