1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2020, 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 ***************************************************************************/
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 */
38
39 #include <stdio.h>
40 #include <string.h>
41
42 #include <curl/curl.h>
43
main(int argc,char * argv[])44 int main(int argc, char *argv[])
45 {
46 CURL *curl;
47 CURLcode res;
48
49 struct curl_httppost *formpost = NULL;
50 struct curl_httppost *lastptr = NULL;
51 struct curl_slist *headerlist = NULL;
52 static const char buf[] = "Expect:";
53
54 curl_global_init(CURL_GLOBAL_ALL);
55
56 /* Fill in the file upload field */
57 curl_formadd(&formpost,
58 &lastptr,
59 CURLFORM_COPYNAME, "sendfile",
60 CURLFORM_FILE, "postit2.c",
61 CURLFORM_END);
62
63 /* Fill in the filename field */
64 curl_formadd(&formpost,
65 &lastptr,
66 CURLFORM_COPYNAME, "filename",
67 CURLFORM_COPYCONTENTS, "postit2.c",
68 CURLFORM_END);
69
70
71 /* Fill in the submit field too, even if this is rarely needed */
72 curl_formadd(&formpost,
73 &lastptr,
74 CURLFORM_COPYNAME, "submit",
75 CURLFORM_COPYCONTENTS, "send",
76 CURLFORM_END);
77
78 curl = curl_easy_init();
79 /* initialize custom header list (stating that Expect: 100-continue is not
80 wanted */
81 headerlist = curl_slist_append(headerlist, buf);
82 if(curl) {
83 /* what URL that receives this POST */
84 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/examplepost.cgi");
85 if((argc == 2) && (!strcmp(argv[1], "noexpectheader")))
86 /* only disable 100-continue header if explicitly requested */
87 curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
88 curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
89
90 /* Perform the request, res will get the return code */
91 res = curl_easy_perform(curl);
92 /* Check for errors */
93 if(res != CURLE_OK)
94 fprintf(stderr, "curl_easy_perform() failed: %s\n",
95 curl_easy_strerror(res));
96
97 /* always cleanup */
98 curl_easy_cleanup(curl);
99
100 /* then cleanup the formpost chain */
101 curl_formfree(formpost);
102 /* free slist */
103 curl_slist_free_all(headerlist);
104 }
105 return 0;
106 }
107