1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2017, 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.haxx.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 ***************************************************************************/
22 /* <DESC>
23 * Extract lots of TLS certificate info.
24 * </DESC>
25 */
26 #include <stdio.h>
27
28 #include <curl/curl.h>
29
wrfu(void * ptr,size_t size,size_t nmemb,void * stream)30 static size_t wrfu(void *ptr, size_t size, size_t nmemb, void *stream)
31 {
32 (void)stream;
33 (void)ptr;
34 return size * nmemb;
35 }
36
main(void)37 int main(void)
38 {
39 CURL *curl;
40 CURLcode res;
41
42 curl_global_init(CURL_GLOBAL_DEFAULT);
43
44 curl = curl_easy_init();
45 if(curl) {
46 curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/");
47
48 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, wrfu);
49
50 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
51 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
52
53 curl_easy_setopt(curl, CURLOPT_VERBOSE, 0L);
54 curl_easy_setopt(curl, CURLOPT_CERTINFO, 1L);
55
56 res = curl_easy_perform(curl);
57
58 if(!res) {
59 struct curl_certinfo *certinfo;
60
61 res = curl_easy_getinfo(curl, CURLINFO_CERTINFO, &certinfo);
62
63 if(!res && certinfo) {
64 int i;
65
66 printf("%d certs!\n", certinfo->num_of_certs);
67
68 for(i = 0; i < certinfo->num_of_certs; i++) {
69 struct curl_slist *slist;
70
71 for(slist = certinfo->certinfo[i]; slist; slist = slist->next)
72 printf("%s\n", slist->data);
73
74 }
75 }
76
77 }
78
79 curl_easy_cleanup(curl);
80 }
81
82 curl_global_cleanup();
83
84 return 0;
85 }
86