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 referrer header.
26 * </DESC>
27 */
28#include <stdio.h>
29#include <curl/curl.h>
30
31int main(void)
32{
33  CURL *curl;
34
35  curl = curl_easy_init();
36  if(curl) {
37    CURLcode res;
38
39    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
40    curl_easy_setopt(curl, CURLOPT_REFERER, "https://example.org/referrer");
41
42    /* Perform the request, res will get the return code */
43    res = curl_easy_perform(curl);
44    /* Check for errors */
45    if(res != CURLE_OK)
46      fprintf(stderr, "curl_easy_perform() failed: %s\n",
47              curl_easy_strerror(res));
48    else {
49      char *hdr;
50      res = curl_easy_getinfo(curl, CURLINFO_REFERER, &hdr);
51      if((res == CURLE_OK) && hdr)
52        printf("Referrer header: %s\n", hdr);
53    }
54
55    /* always cleanup */
56    curl_easy_cleanup(curl);
57  }
58  return 0;
59}
60