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
main(int argc,char * argv[])50 int 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