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comparison mupdf-source/thirdparty/curl/docs/examples/sessioninfo.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2016, 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 * Uses the CURLINFO_TLS_SESSION data.
24 * </DESC>
25 */
26
27 /* Note that this example currently requires curl to be linked against
28 GnuTLS (and this program must also be linked against -lgnutls). */
29
30 #include <stdio.h>
31
32 #include <curl/curl.h>
33 #include <gnutls/gnutls.h>
34
35 static CURL *curl;
36
37 static size_t wrfu(void *ptr, size_t size, size_t nmemb, void *stream)
38 {
39 const struct curl_tlssessioninfo *info;
40 unsigned int cert_list_size;
41 const gnutls_datum_t *chainp;
42 CURLcode res;
43
44 (void)stream;
45 (void)ptr;
46
47 res = curl_easy_getinfo(curl, CURLINFO_TLS_SESSION, &info);
48
49 if(!res) {
50 switch(info->backend) {
51 case CURLSSLBACKEND_GNUTLS:
52 /* info->internals is now the gnutls_session_t */
53 chainp = gnutls_certificate_get_peers(info->internals, &cert_list_size);
54 if((chainp) && (cert_list_size)) {
55 unsigned int i;
56
57 for(i = 0; i < cert_list_size; i++) {
58 gnutls_x509_crt_t cert;
59 gnutls_datum_t dn;
60
61 if(GNUTLS_E_SUCCESS == gnutls_x509_crt_init(&cert)) {
62 if(GNUTLS_E_SUCCESS ==
63 gnutls_x509_crt_import(cert, &chainp[i], GNUTLS_X509_FMT_DER)) {
64 if(GNUTLS_E_SUCCESS ==
65 gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL, &dn)) {
66 fprintf(stderr, "Certificate #%u: %.*s", i, dn.size, dn.data);
67
68 gnutls_free(dn.data);
69 }
70 }
71
72 gnutls_x509_crt_deinit(cert);
73 }
74 }
75 }
76 break;
77 case CURLSSLBACKEND_NONE:
78 default:
79 break;
80 }
81 }
82
83 return size * nmemb;
84 }
85
86 int main(void)
87 {
88 curl_global_init(CURL_GLOBAL_DEFAULT);
89
90 curl = curl_easy_init();
91 if(curl) {
92 curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/");
93
94 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, wrfu);
95
96 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
97 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
98
99 curl_easy_setopt(curl, CURLOPT_VERBOSE, 0L);
100
101 (void) curl_easy_perform(curl);
102
103 curl_easy_cleanup(curl);
104 }
105
106 curl_global_cleanup();
107
108 return 0;
109 }