1/***************************************************************************
2 *                                  _   _ ____  _
3 *  Project                     ___| | | |  _ \| |
4 *                             / __| | | | |_) | |
5 *                            | (__| |_| |  _ <| |___
6 *                             \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2016, 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/* <DESC>
23 * HTTP Multipart formpost with file upload and two additional parts.
24 * </DESC>
25 */
26/* Example code that uploads a file name 'foo' to a remote script that accepts
27 * "HTML form based" (as described in RFC1738) uploads using HTTP POST.
28 *
29 * The imaginary form we'll fill in looks like:
30 *
31 * <form method="post" enctype="multipart/form-data" action="examplepost.cgi">
32 * Enter file: <input type="file" name="sendfile" size="40">
33 * Enter file name: <input type="text" name="filename" size="30">
34 * <input type="submit" value="send" name="submit">
35 * </form>
36 *
37 * This exact source code has not been verified to work.
38 */
39
40#include <stdio.h>
41#include <string.h>
42
43#include <curl/curl.h>
44
45int main(int argc, char *argv[])
46{
47  CURL *curl;
48  CURLcode res;
49
50  struct curl_httppost *formpost=NULL;
51  struct curl_httppost *lastptr=NULL;
52  struct curl_slist *headerlist=NULL;
53  static const char buf[] = "Expect:";
54
55  curl_global_init(CURL_GLOBAL_ALL);
56
57  /* Fill in the file upload field */
58  curl_formadd(&formpost,
59               &lastptr,
60               CURLFORM_COPYNAME, "sendfile",
61               CURLFORM_FILE, "postit2.c",
62               CURLFORM_END);
63
64  /* Fill in the filename field */
65  curl_formadd(&formpost,
66               &lastptr,
67               CURLFORM_COPYNAME, "filename",
68               CURLFORM_COPYCONTENTS, "postit2.c",
69               CURLFORM_END);
70
71
72  /* Fill in the submit field too, even if this is rarely needed */
73  curl_formadd(&formpost,
74               &lastptr,
75               CURLFORM_COPYNAME, "submit",
76               CURLFORM_COPYCONTENTS, "send",
77               CURLFORM_END);
78
79  curl = curl_easy_init();
80  /* initialize custom header list (stating that Expect: 100-continue is not
81     wanted */
82  headerlist = curl_slist_append(headerlist, buf);
83  if(curl) {
84    /* what URL that receives this POST */
85    curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/examplepost.cgi");
86    if((argc == 2) && (!strcmp(argv[1], "noexpectheader")))
87      /* only disable 100-continue header if explicitly requested */
88      curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
89    curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
90
91    /* Perform the request, res will get the return code */
92    res = curl_easy_perform(curl);
93    /* Check for errors */
94    if(res != CURLE_OK)
95      fprintf(stderr, "curl_easy_perform() failed: %s\n",
96              curl_easy_strerror(res));
97
98    /* always cleanup */
99    curl_easy_cleanup(curl);
100
101    /* then cleanup the formpost chain */
102    curl_formfree(formpost);
103    /* free slist */
104    curl_slist_free_all (headerlist);
105  }
106  return 0;
107}
108