getreferrer.c 1.8 KB

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