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 * Show how to extract Location: header and URL to redirect to.
26 * </DESC>
27 */
28 #include <stdio.h>
29 #include <curl/curl.h>
30
main(void)31 int main(void)
32 {
33 CURL *curl;
34 CURLcode res;
35 char *location;
36 long response_code;
37
38 curl = curl_easy_init();
39 if(curl) {
40 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
41
42 /* example.com is redirected, figure out the redirection! */
43
44 /* Perform the request, res gets the return code */
45 res = curl_easy_perform(curl);
46 /* Check for errors */
47 if(res != CURLE_OK)
48 fprintf(stderr, "curl_easy_perform() failed: %s\n",
49 curl_easy_strerror(res));
50 else {
51 res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
52 if((res == CURLE_OK) &&
53 ((response_code / 100) != 3)) {
54 /* a redirect implies a 3xx response code */
55 fprintf(stderr, "Not a redirect.\n");
56 }
57 else {
58 res = curl_easy_getinfo(curl, CURLINFO_REDIRECT_URL, &location);
59
60 if((res == CURLE_OK) && location) {
61 /* This is the new absolute URL that you could redirect to, even if
62 * the Location: response header may have been a relative URL. */
63 printf("Redirected to: %s\n", location);
64 }
65 }
66 }
67
68 /* always cleanup */
69 curl_easy_cleanup(curl);
70 }
71 return 0;
72 }
73
