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 curl_mime *form = NULL;
50 curl_mimepart *field = NULL;
51 struct curl_slist *headerlist = NULL;
52 static const char buf[] = "Expect:";
53
54 curl_global_init(CURL_GLOBAL_ALL);
55
56 curl = curl_easy_init();
57 if(curl) {
58 /* Create the form */
59 form = curl_mime_init(curl);
60
61 /* Fill in the file upload field */
62 field = curl_mime_addpart(form);
63 curl_mime_name(field, "sendfile");
64 curl_mime_filedata(field, "postit2.c");
65
66 /* Fill in the filename field */
67 field = curl_mime_addpart(form);
68 curl_mime_name(field, "filename");
69 curl_mime_data(field, "postit2.c", CURL_ZERO_TERMINATED);
70
71 /* Fill in the submit field too, even if this is rarely needed */
72 field = curl_mime_addpart(form);
73 curl_mime_name(field, "submit");
74 curl_mime_data(field, "send", CURL_ZERO_TERMINATED);
75
76 /* initialize custom header list (stating that Expect: 100-continue is not
77 wanted */
78 headerlist = curl_slist_append(headerlist, buf);
79 /* what URL that receives this POST */
80 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/examplepost.cgi");
81 if((argc == 2) && (!strcmp(argv[1], "noexpectheader")))
82 /* only disable 100-continue header if explicitly requested */
83 curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
84 curl_easy_setopt(curl, CURLOPT_MIMEPOST, form);
85
86 /* Perform the request, res will get the return code */
87 res = curl_easy_perform(curl);
88 /* Check for errors */
89 if(res != CURLE_OK)
90 fprintf(stderr, "curl_easy_perform() failed: %s\n",
91 curl_easy_strerror(res));
92
93 /* always cleanup */
94 curl_easy_cleanup(curl);
95
96 /* then cleanup the form */
97 curl_mime_free(form);
98 /* free slist */
99 curl_slist_free_all(headerlist);
100 }
101 return 0;
102 }
103