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
26/*
27 * This is an example showing how to get a single file from an FTP server.
28 * It delays the actual destination file creation until the first write
29 * callback so that it won't create an empty file in case the remote file
30 * doesn't exist or something else fails.
31 */
32
33struct FtpFile {
34  const char *filename;
35  FILE *stream;
36};
37
38static size_t my_fwrite(void *buffer, size_t size, size_t nmemb, void *stream)
39{
40  struct FtpFile *out=(struct FtpFile *)stream;
41  if(out && !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
51int main(void)
52{
53  CURL *curl;
54  CURLcode res;
55  struct FtpFile ftpfile={
56    "curl.tar.gz", /* name to store the file as if succesful */
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!
66     */
67    curl_easy_setopt(curl, CURLOPT_URL,
68                     "ftp://ftp.example.com/pub/www/utilities/curl/curl-7.9.2.tar.gz");
69    /* Define our callback to get called when there's data to be written */
70    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_fwrite);
71    /* Set a pointer to our struct to pass to the callback */
72    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &ftpfile);
73
74    /* Switch on full protocol/debug output */
75    curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
76
77    res = curl_easy_perform(curl);
78
79    /* always cleanup */
80    curl_easy_cleanup(curl);
81
82    if(CURLE_OK != res) {
83      /* we failed */
84      fprintf(stderr, "curl told us %d\n", res);
85    }
86  }
87
88  if(ftpfile.stream)
89    fclose(ftpfile.stream); /* close the local file */
90
91  curl_global_cleanup();
92
93  return 0;
94}
95