1/***************************************************************************
2 *                                  _   _ ____  _
3 *  Project                     ___| | | |  _ \| |
4 *                             / __| | | | |_) | |
5 *                            | (__| |_| |  _ <| |___
6 *                             \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 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.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 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24/* <DESC>
25 * HTTP Multipart formpost with file upload and two additional parts.
26 * </DESC>
27 */
28
29/*
30 * Example code that uploads a file name 'foo' to a remote script that accepts
31 * "HTML form based" (as described in RFC 1738) uploads using HTTP POST.
32 *
33 * Warning: this example uses the deprecated form api. See "postit2.c"
34 *          for a similar example using the mime api.
35 *
36 * The imaginary form we will fill in looks like:
37 *
38 * <form method="post" enctype="multipart/form-data" action="examplepost.cgi">
39 * Enter file: <input type="file" name="sendfile" size="40">
40 * Enter file name: <input type="text" name="filename" size="30">
41 * <input type="submit" value="send" name="submit">
42 * </form>
43 */
44
45#include <stdio.h>
46#include <string.h>
47
48#include <curl/curl.h>
49
50int main(int argc, char *argv[])
51{
52  CURL *curl;
53  CURLcode res;
54
55  struct curl_httppost *formpost = NULL;
56  struct curl_httppost *lastptr = NULL;
57  struct curl_slist *headerlist = NULL;
58  static const char buf[] = "Expect:";
59
60  curl_global_init(CURL_GLOBAL_ALL);
61
62  /* Fill in the file upload field */
63  curl_formadd(&formpost,
64               &lastptr,
65               CURLFORM_COPYNAME, "sendfile",
66               CURLFORM_FILE, "postit2-formadd.c",
67               CURLFORM_END);
68
69  /* Fill in the filename field */
70  curl_formadd(&formpost,
71               &lastptr,
72               CURLFORM_COPYNAME, "filename",
73               CURLFORM_COPYCONTENTS, "postit2-formadd.c",
74               CURLFORM_END);
75
76
77  /* Fill in the submit field too, even if this is rarely needed */
78  curl_formadd(&formpost,
79               &lastptr,
80               CURLFORM_COPYNAME, "submit",
81               CURLFORM_COPYCONTENTS, "send",
82               CURLFORM_END);
83
84  curl = curl_easy_init();
85  /* initialize custom header list (stating that Expect: 100-continue is not
86     wanted */
87  headerlist = curl_slist_append(headerlist, buf);
88  if(curl) {
89    /* what URL that receives this POST */
90    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/examplepost.cgi");
91    if((argc == 2) && (!strcmp(argv[1], "noexpectheader")))
92      /* only disable 100-continue header if explicitly requested */
93      curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
94    curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
95
96    /* Perform the request, res will get the return code */
97    res = curl_easy_perform(curl);
98    /* Check for errors */
99    if(res != CURLE_OK)
100      fprintf(stderr, "curl_easy_perform() failed: %s\n",
101              curl_easy_strerror(res));
102
103    /* always cleanup */
104    curl_easy_cleanup(curl);
105
106    /* then cleanup the formpost chain */
107    curl_formfree(formpost);
108    /* free slist */
109    curl_slist_free_all(headerlist);
110  }
111  return 0;
112}
113