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 * Simple HTTP GET that stores the headers in a separate file
26 * </DESC>
27 */
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <unistd.h>
31
32 #include <curl/curl.h>
33
write_data(void * ptr,size_t size,size_t nmemb,void * stream)34 static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream)
35 {
36 size_t written = fwrite(ptr, size, nmemb, (FILE *)stream);
37 return written;
38 }
39
main(void)40 int main(void)
41 {
42 CURL *curl_handle;
43 static const char *headerfilename = "head.out";
44 FILE *headerfile;
45 static const char *bodyfilename = "body.out";
46 FILE *bodyfile;
47
48 curl_global_init(CURL_GLOBAL_ALL);
49
50 /* init the curl session */
51 curl_handle = curl_easy_init();
52
53 /* set URL to get */
54 curl_easy_setopt(curl_handle, CURLOPT_URL, "https://example.com");
55
56 /* no progress meter please */
57 curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L);
58
59 /* send all data to this function */
60 curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data);
61
62 /* open the header file */
63 headerfile = fopen(headerfilename, "wb");
64 if(!headerfile) {
65 curl_easy_cleanup(curl_handle);
66 return -1;
67 }
68
69 /* open the body file */
70 bodyfile = fopen(bodyfilename, "wb");
71 if(!bodyfile) {
72 curl_easy_cleanup(curl_handle);
73 fclose(headerfile);
74 return -1;
75 }
76
77 /* we want the headers be written to this file handle */
78 curl_easy_setopt(curl_handle, CURLOPT_HEADERDATA, headerfile);
79
80 /* we want the body be written to this file handle instead of stdout */
81 curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, bodyfile);
82
83 /* get it! */
84 curl_easy_perform(curl_handle);
85
86 /* close the header file */
87 fclose(headerfile);
88
89 /* close the body file */
90 fclose(bodyfile);
91
92 /* cleanup curl stuff */
93 curl_easy_cleanup(curl_handle);
94
95 return 0;
96 }
97