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df70a68984
Build these examples when the necessary dependencies are present:
- cacertinmem, usercertinmem (OpenSSL/fork)
- multi-uv (libuv)
- multithread, threaded-ssl (pthread)
- sessioninfo (GnuTLS)
Indicate the necessary dependency via a `Required:` comment placed in
the source file. A single dependency per source is supported as of now.
The name of the dependency should match the variable used within
the cmake scripts, which in turn matches the macro used in the config
header. E.g. for GnuTLS it's `USE_GNUTLS`.
Also:
- GHA/macos: build examples in two job to test GnuTLS and pthread ones.
- GHA/linux: enable libuv to test it with examples.
Follow-up to 6bb7714032 #18914
Closes #18909
118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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/* <DESC>
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* Uses the CURLINFO_TLS_SESSION data.
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* </DESC>
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*/
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/* Note that this example currently requires curl to be linked against
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GnuTLS (and this program must also be linked against -lgnutls). */
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/* Requires: USE_GNUTLS */
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#ifndef CURL_DISABLE_DEPRECATION
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#define CURL_DISABLE_DEPRECATION
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#endif
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#include <stdio.h>
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#include <curl/curl.h>
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#include <gnutls/gnutls.h>
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#include <gnutls/x509.h>
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static CURL *curl;
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static size_t wrfu(void *ptr, size_t size, size_t nmemb, void *stream)
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{
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const struct curl_tlssessioninfo *info;
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unsigned int cert_list_size;
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const gnutls_datum_t *chainp;
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CURLcode res;
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(void)stream;
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(void)ptr;
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res = curl_easy_getinfo(curl, CURLINFO_TLS_SESSION, &info);
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if(!res) {
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switch(info->backend) {
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case CURLSSLBACKEND_GNUTLS:
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/* info->internals is now the gnutls_session_t */
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chainp = gnutls_certificate_get_peers(info->internals, &cert_list_size);
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if((chainp) && (cert_list_size)) {
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unsigned int i;
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for(i = 0; i < cert_list_size; i++) {
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gnutls_x509_crt_t cert;
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gnutls_datum_t dn;
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if(GNUTLS_E_SUCCESS == gnutls_x509_crt_init(&cert)) {
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if(GNUTLS_E_SUCCESS ==
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gnutls_x509_crt_import(cert, &chainp[i], GNUTLS_X509_FMT_DER)) {
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if(GNUTLS_E_SUCCESS ==
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gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL, &dn)) {
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fprintf(stderr, "Certificate #%u: %.*s", i, dn.size, dn.data);
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gnutls_free(dn.data);
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}
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}
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gnutls_x509_crt_deinit(cert);
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}
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}
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}
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break;
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case CURLSSLBACKEND_NONE:
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default:
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break;
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}
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}
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return size * nmemb;
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}
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int main(void)
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{
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curl_global_init(CURL_GLOBAL_DEFAULT);
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curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/");
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, wrfu);
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
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curl_easy_setopt(curl, CURLOPT_VERBOSE, 0L);
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(void)curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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curl_global_cleanup();
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return 0;
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}
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