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/*
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* Copyright (C) 2015-2017 Red Hat, Inc.
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*
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* Author: Nikos Mavrogiannopoulos
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*
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* This file is part of GnuTLS.
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*
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* GnuTLS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuTLS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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/* This program tests the various certificate key exchange methods supported
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* in gnutls */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <gnutls/gnutls.h>
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#include "utils.h"
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#include "eagain-common.h"
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#include "cert-common.h"
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#define USE_CERT 1
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#define ASK_CERT 2
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static void tls_log_func(int level, const char *str)
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{
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fprintf(stderr, "%s|<%d>| %s", side, level, str);
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}
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static
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void try_with_key(const char *name,
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const char *server_prio,
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const char *client_prio,
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const gnutls_datum_t *serv_cert,
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const gnutls_datum_t *serv_key,
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const gnutls_datum_t *client_cert,
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const gnutls_datum_t *client_key,
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unsigned cert_flags,
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int exp_error_server,
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int exp_error_client)
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{
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int ret;
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/* Server stuff. */
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gnutls_certificate_credentials_t serverx509cred;
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gnutls_anon_server_credentials_t s_anoncred;
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gnutls_dh_params_t dh_params;
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const gnutls_datum_t p3 =
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{ (unsigned char *) pkcs3, strlen(pkcs3) };
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gnutls_session_t server;
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int sret = GNUTLS_E_AGAIN;
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/* Client stuff. */
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gnutls_certificate_credentials_t clientx509cred;
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gnutls_anon_client_credentials_t c_anoncred;
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gnutls_session_t client;
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int cret = GNUTLS_E_AGAIN;
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const char *err;
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reset_buffers();
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/* Init server */
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gnutls_anon_allocate_server_credentials(&s_anoncred);
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gnutls_certificate_allocate_credentials(&serverx509cred);
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ret = gnutls_certificate_set_x509_key_mem(serverx509cred,
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serv_cert, serv_key,
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GNUTLS_X509_FMT_PEM);
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if (ret < 0) {
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fail("Could not set key/cert: %s\n", gnutls_strerror(ret));
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}
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gnutls_dh_params_init(&dh_params);
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gnutls_dh_params_import_pkcs3(dh_params, &p3, GNUTLS_X509_FMT_PEM);
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gnutls_certificate_set_dh_params(serverx509cred, dh_params);
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gnutls_anon_set_server_dh_params(s_anoncred, dh_params);
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gnutls_init(&server, GNUTLS_SERVER);
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gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
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serverx509cred);
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gnutls_credentials_set(server, GNUTLS_CRD_ANON, s_anoncred);
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ret = gnutls_priority_set_direct(server, server_prio, &err;;
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if (ret < 0) {
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if (ret == GNUTLS_E_INVALID_REQUEST)
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fprintf(stderr, "Error in server: %s\n", err);
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exit(1);
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}
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gnutls_transport_set_push_function(server, server_push);
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gnutls_transport_set_pull_function(server, server_pull);
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gnutls_transport_set_ptr(server, server);
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/* Init client */
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ret = gnutls_certificate_allocate_credentials(&clientx509cred);
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if (ret < 0)
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exit(1);
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if (cert_flags == USE_CERT) {
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gnutls_certificate_set_x509_key_mem(clientx509cred,
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client_cert, client_key,
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GNUTLS_X509_FMT_PEM);
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gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUIRE);
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} else if (cert_flags == ASK_CERT) {
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gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUEST);
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}
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#if 0
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ret = gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca_cert, GNUTLS_X509_FMT_PEM);
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if (ret < 0)
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exit(1);
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#endif
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ret = gnutls_init(&client, GNUTLS_CLIENT);
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if (ret < 0)
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exit(1);
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gnutls_anon_allocate_client_credentials(&c_anoncred);
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gnutls_credentials_set(client, GNUTLS_CRD_ANON, c_anoncred);
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ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
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clientx509cred);
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if (ret < 0)
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exit(1);
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gnutls_transport_set_push_function(client, client_push);
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gnutls_transport_set_pull_function(client, client_pull);
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gnutls_transport_set_ptr(client, client);
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ret = gnutls_priority_set_direct(client, client_prio, &err;;
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if (ret < 0) {
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if (ret == GNUTLS_E_INVALID_REQUEST)
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fprintf(stderr, "Error in %s\n", err);
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exit(1);
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}
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success("negotiating %s\n", name);
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HANDSHAKE_EXPECT(client, server, exp_error_client, exp_error_server);
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gnutls_deinit(client);
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gnutls_deinit(server);
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gnutls_certificate_free_credentials(serverx509cred);
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gnutls_certificate_free_credentials(clientx509cred);
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gnutls_anon_free_server_credentials(s_anoncred);
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gnutls_anon_free_client_credentials(c_anoncred);
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gnutls_dh_params_deinit(dh_params);
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}
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void doit(void)
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{
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global_init();
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gnutls_global_set_log_function(tls_log_func);
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if (debug)
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gnutls_global_set_log_level(6);
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/* check compatibility and handling of SIGN-ECDSA-SECP256R1-SHA256 which
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* is available under TLS1.3 but not TLS1.2 */
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try_with_key("TLS 1.2 with ecdhe ecdsa with ECDSA-SECP256R1-SHA256",
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NULL, "NORMAL:-VERS-ALL:+VERS-TLS1.2:-KX-ALL:+ECDHE-ECDSA:-SIGN-ALL:+SIGN-ECDSA-SECP256R1-SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+SIGN-RSA-SHA256",
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&server_ca3_localhost_ecc_cert, &server_ca3_ecc_key, NULL, NULL, 0, GNUTLS_E_NO_CIPHER_SUITES, GNUTLS_E_AGAIN);
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try_with_key("TLS 1.2 with ecdhe ecdsa with ECDSA-SHA256",
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NULL, "NORMAL:-VERS-ALL:+VERS-TLS1.2:-KX-ALL:+ECDHE-ECDSA:-SIGN-ALL:+SIGN-ECDSA-SHA256:+SIGN-RSA-SHA256",
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&server_ca3_localhost_ecc_cert, &server_ca3_ecc_key, NULL, NULL, 0, 0, 0);
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gnutls_global_deinit();
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}
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