postit2.c (3507B)
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 /* Example code that uploads a filename 'foo' to a remote script that accepts 29 * "HTML form based" (as described in RFC 1738) uploads using HTTP POST. 30 * 31 * The imaginary form we fill in looks like: 32 * 33 * <form method="post" enctype="multipart/form-data" action="examplepost.cgi"> 34 * Enter file: <input type="file" name="sendfile" size="40"> 35 * Enter filename: <input type="text" name="filename" size="30"> 36 * <input type="submit" value="send" name="submit"> 37 * </form> 38 * 39 */ 40 41 #include <stdio.h> 42 #include <string.h> 43 44 #include <curl/curl.h> 45 46 int main(int argc, char *argv[]) 47 { 48 CURL *curl; 49 CURLcode res; 50 51 curl_mime *form = NULL; 52 curl_mimepart *field = NULL; 53 struct curl_slist *headerlist = NULL; 54 static const char buf[] = "Expect:"; 55 56 curl_global_init(CURL_GLOBAL_ALL); 57 58 curl = curl_easy_init(); 59 if(curl) { 60 /* Create the form */ 61 form = curl_mime_init(curl); 62 63 /* Fill in the file upload field */ 64 field = curl_mime_addpart(form); 65 curl_mime_name(field, "sendfile"); 66 curl_mime_filedata(field, "postit2.c"); 67 68 /* Fill in the filename field */ 69 field = curl_mime_addpart(form); 70 curl_mime_name(field, "filename"); 71 curl_mime_data(field, "postit2.c", CURL_ZERO_TERMINATED); 72 73 /* Fill in the submit field too, even if this is rarely needed */ 74 field = curl_mime_addpart(form); 75 curl_mime_name(field, "submit"); 76 curl_mime_data(field, "send", CURL_ZERO_TERMINATED); 77 78 /* initialize custom header list (stating that Expect: 100-continue is not 79 wanted */ 80 headerlist = curl_slist_append(headerlist, buf); 81 /* what URL that receives this POST */ 82 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/examplepost.cgi"); 83 if((argc == 2) && (!strcmp(argv[1], "noexpectheader"))) 84 /* only disable 100-continue header if explicitly requested */ 85 curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist); 86 curl_easy_setopt(curl, CURLOPT_MIMEPOST, form); 87 88 /* Perform the request, res gets the return code */ 89 res = curl_easy_perform(curl); 90 /* Check for errors */ 91 if(res != CURLE_OK) 92 fprintf(stderr, "curl_easy_perform() failed: %s\n", 93 curl_easy_strerror(res)); 94 95 /* always cleanup */ 96 curl_easy_cleanup(curl); 97 98 /* then cleanup the form */ 99 curl_mime_free(form); 100 /* free slist */ 101 curl_slist_free_all(headerlist); 102 } 103 return 0; 104 }