1/***************************************************************************
2 *                                  _   _ ____  _
3 *  Project                     ___| | | |  _ \| |
4 *                             / __| | | | |_) | |
5 *                            | (__| |_| |  _ <| |___
6 *                             \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2012, 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#include <string.h>
24
25#include <curl/curl.h>
26#include <sys/types.h>
27#include <sys/stat.h>
28#include <fcntl.h>
29#include <errno.h>
30#ifdef WIN32
31#include <io.h>
32#else
33#include <unistd.h>
34#endif
35
36/*
37 * This example shows an FTP upload, with a rename of the file just after
38 * a successful upload.
39 *
40 * Example based on source code provided by Erick Nuwendam. Thanks!
41 */
42
43#define LOCAL_FILE      "/tmp/uploadthis.txt"
44#define UPLOAD_FILE_AS  "while-uploading.txt"
45#define REMOTE_URL      "ftp://example.com/"  UPLOAD_FILE_AS
46#define RENAME_FILE_TO  "renamed-and-fine.txt"
47
48/* NOTE: if you want this example to work on Windows with libcurl as a
49   DLL, you MUST also provide a read callback with CURLOPT_READFUNCTION.
50   Failing to do so will give you a crash since a DLL may not use the
51   variable's memory when passed in to it from an app like this. */
52static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream)
53{
54  curl_off_t nread;
55  /* in real-world cases, this would probably get this data differently
56     as this fread() stuff is exactly what the library already would do
57     by default internally */
58  size_t retcode = fread(ptr, size, nmemb, stream);
59
60  nread = (curl_off_t)retcode;
61
62  fprintf(stderr, "*** We read %" CURL_FORMAT_CURL_OFF_T
63          " bytes from file\n", nread);
64  return retcode;
65}
66
67int main(void)
68{
69  CURL *curl;
70  CURLcode res;
71  FILE *hd_src;
72  struct stat file_info;
73  curl_off_t fsize;
74
75  struct curl_slist *headerlist=NULL;
76  static const char buf_1 [] = "RNFR " UPLOAD_FILE_AS;
77  static const char buf_2 [] = "RNTO " RENAME_FILE_TO;
78
79  /* get the file size of the local file */
80  if(stat(LOCAL_FILE, &file_info)) {
81    printf("Couldnt open '%s': %s\n", LOCAL_FILE, strerror(errno));
82    return 1;
83  }
84  fsize = (curl_off_t)file_info.st_size;
85
86  printf("Local file size: %" CURL_FORMAT_CURL_OFF_T " bytes.\n", fsize);
87
88  /* get a FILE * of the same file */
89  hd_src = fopen(LOCAL_FILE, "rb");
90
91  /* In windows, this will init the winsock stuff */
92  curl_global_init(CURL_GLOBAL_ALL);
93
94  /* get a curl handle */
95  curl = curl_easy_init();
96  if(curl) {
97    /* build a list of commands to pass to libcurl */
98    headerlist = curl_slist_append(headerlist, buf_1);
99    headerlist = curl_slist_append(headerlist, buf_2);
100
101    /* we want to use our own read function */
102    curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
103
104    /* enable uploading */
105    curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
106
107    /* specify target */
108    curl_easy_setopt(curl,CURLOPT_URL, REMOTE_URL);
109
110    /* pass in that last of FTP commands to run after the transfer */
111    curl_easy_setopt(curl, CURLOPT_POSTQUOTE, headerlist);
112
113    /* now specify which file to upload */
114    curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
115
116    /* Set the size of the file to upload (optional).  If you give a *_LARGE
117       option you MUST make sure that the type of the passed-in argument is a
118       curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must
119       make sure that to pass in a type 'long' argument. */
120    curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
121                     (curl_off_t)fsize);
122
123    /* Now run off and do what you've been told! */
124    res = curl_easy_perform(curl);
125    /* Check for errors */
126    if(res != CURLE_OK)
127      fprintf(stderr, "curl_easy_perform() failed: %s\n",
128              curl_easy_strerror(res));
129
130    /* clean up the FTP commands list */
131    curl_slist_free_all (headerlist);
132
133    /* always cleanup */
134    curl_easy_cleanup(curl);
135  }
136  fclose(hd_src); /* close the local file */
137
138  curl_global_cleanup();
139  return 0;
140}
141