1/***************************************************************************
2 *                                  _   _ ____  _
3 *  Project                     ___| | | |  _ \| |
4 *                             / __| | | | |_) | |
5 *                            | (__| |_| |  _ <| |___
6 *                             \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2011, 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 http://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#include <stdio.h>
23
24#include <curl/curl.h>
25#include <curl/types.h>
26#include <curl/easy.h>
27
28/*
29 * This is an example showing how to get a single file from an FTP server.
30 * It delays the actual destination file creation until the first write
31 * callback so that it won't create an empty file in case the remote file
32 * doesn't exist or something else fails.
33 */
34
35struct FtpFile {
36  const char *filename;
37  FILE *stream;
38};
39
40static size_t my_fwrite(void *buffer, size_t size, size_t nmemb, void *stream)
41{
42  struct FtpFile *out=(struct FtpFile *)stream;
43  if(out && !out->stream) {
44    /* open file for writing */
45    out->stream=fopen(out->filename, "wb");
46    if(!out->stream)
47      return -1; /* failure, can't open file to write */
48  }
49  return fwrite(buffer, size, nmemb, out->stream);
50}
51
52
53int main(void)
54{
55  CURL *curl;
56  CURLcode res;
57  struct FtpFile ftpfile={
58    "curl.tar.gz", /* name to store the file as if succesful */
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!
68     */
69    curl_easy_setopt(curl, CURLOPT_URL,
70                     "ftp://ftp.example.com/pub/www/utilities/curl/curl-7.9.2.tar.gz");
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    /* Switch on full protocol/debug output */
77    curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
78
79    res = curl_easy_perform(curl);
80
81    /* always cleanup */
82    curl_easy_cleanup(curl);
83
84    if(CURLE_OK != res) {
85      /* we failed */
86      fprintf(stderr, "curl told us %d\n", res);
87    }
88  }
89
90  if(ftpfile.stream)
91    fclose(ftpfile.stream); /* close the local file */
92
93  curl_global_cleanup();
94
95  return 0;
96}
97