1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2019, 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.haxx.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 ***************************************************************************/
22
23 #include <stdio.h>
24
25 #include <curl/curl.h>
26
27 /* <DESC>
28 * Get a single file from an FTPS server.
29 * </DESC>
30 */
31
32 struct FtpFile {
33 const char *filename;
34 FILE *stream;
35 };
36
my_fwrite(void * buffer,size_t size,size_t nmemb,void * stream)37 static size_t my_fwrite(void *buffer, size_t size, size_t nmemb,
38 void *stream)
39 {
40 struct FtpFile *out = (struct FtpFile *)stream;
41 if(!out->stream) {
42 /* open file for writing */
43 out->stream = fopen(out->filename, "wb");
44 if(!out->stream)
45 return -1; /* failure, can't open file to write */
46 }
47 return fwrite(buffer, size, nmemb, out->stream);
48 }
49
50
main(void)51 int main(void)
52 {
53 CURL *curl;
54 CURLcode res;
55 struct FtpFile ftpfile = {
56 "yourfile.bin", /* name to store the file as if successful */
57 NULL
58 };
59
60 curl_global_init(CURL_GLOBAL_DEFAULT);
61
62 curl = curl_easy_init();
63 if(curl) {
64 /*
65 * You better replace the URL with one that works! Note that we use an
66 * FTP:// URL with standard explicit FTPS. You can also do FTPS:// URLs if
67 * you want to do the rarer kind of transfers: implicit.
68 */
69 curl_easy_setopt(curl, CURLOPT_URL,
70 "ftp://user@server/home/user/file.txt");
71 /* Define our callback to get called when there's data to be written */
72 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_fwrite);
73 /* Set a pointer to our struct to pass to the callback */
74 curl_easy_setopt(curl, CURLOPT_WRITEDATA, &ftpfile);
75
76 /* We activate SSL and we require it for both control and data */
77 curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_ALL);
78
79 /* Switch on full protocol/debug output */
80 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
81
82 res = curl_easy_perform(curl);
83
84 /* always cleanup */
85 curl_easy_cleanup(curl);
86
87 if(CURLE_OK != res) {
88 /* we failed */
89 fprintf(stderr, "curl told us %d\n", res);
90 }
91 }
92
93 if(ftpfile.stream)
94 fclose(ftpfile.stream); /* close the local file */
95
96 curl_global_cleanup();
97
98 return 0;
99 }
100