Annotation of embedaddon/curl/docs/examples/postit2-formadd.c, revision 1.1.1.1
1.1 misho 1: /***************************************************************************
2: * _ _ ____ _
3: * Project ___| | | | _ \| |
4: * / __| | | | |_) | |
5: * | (__| |_| | _ <| |___
6: * \___|\___/|_| \_\_____|
7: *
8: * Copyright (C) 1998 - 2019, 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: */
38:
39: #include <stdio.h>
40: #include <string.h>
41:
42: #include <curl/curl.h>
43:
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: }
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