1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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.haxx.se/docs/copyright.html.
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.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 * Extract lots of TLS certificate info.
28 #include <curl/curl.h>
30 static size_t wrfu(void *ptr, size_t size, size_t nmemb, void *stream)
42 curl_global_init(CURL_GLOBAL_DEFAULT);
44 curl = curl_easy_init();
46 curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/");
48 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, wrfu);
50 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
51 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
53 curl_easy_setopt(curl, CURLOPT_VERBOSE, 0L);
54 curl_easy_setopt(curl, CURLOPT_CERTINFO, 1L);
56 res = curl_easy_perform(curl);
59 struct curl_certinfo *certinfo;
61 res = curl_easy_getinfo(curl, CURLINFO_CERTINFO, &certinfo);
63 if(!res && certinfo) {
66 printf("%d certs!\n", certinfo->num_of_certs);
68 for(i = 0; i < certinfo->num_of_certs; i++) {
69 struct curl_slist *slist;
71 for(slist = certinfo->certinfo[i]; slist; slist = slist->next)
72 printf("%s\n", slist->data);
79 curl_easy_cleanup(curl);
82 curl_global_cleanup();