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/*
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* Copyright (C) 2016 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 General Public License
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* along with GnuTLS; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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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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#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 <gnutls/dtls.h>
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#include <assert.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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/*
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* That test verifies whether all the supported versions are negotiated
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* with the NORMAL priority string.
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*/
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const char *side;
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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 void try(const char *client_prio, int expected)
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{
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int ret;
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gnutls_certificate_credentials_t serverx509cred;
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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_session_t client;
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int cret = GNUTLS_E_AGAIN;
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unsigned flags = 0;
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unsigned dtls = 0;
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const char *server_prio = "NORMAL:+VERS-TLS-ALL";
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if (expected >= GNUTLS_DTLS_VERSION_MIN && expected <= GNUTLS_DTLS_VERSION_MAX) {
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dtls = 1;
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/* we do not really do negotiation in that version */
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if (expected == GNUTLS_DTLS0_9)
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server_prio = client_prio;
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}
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/* General 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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/* Init server */
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gnutls_certificate_allocate_credentials(&serverx509cred);
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gnutls_certificate_set_x509_key_mem(serverx509cred,
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&server_cert, &server_key,
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GNUTLS_X509_FMT_PEM);
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if (dtls)
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flags |= (GNUTLS_DATAGRAM | GNUTLS_NONBLOCK);
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gnutls_init(&server, GNUTLS_SERVER|flags);
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gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
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serverx509cred);
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assert(gnutls_priority_set_direct(server,
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server_prio,
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NULL) >= 0);
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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_pull_timeout_function(server, server_pull_timeout_func);
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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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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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ret = gnutls_init(&client, GNUTLS_CLIENT|flags);
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if (ret < 0)
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exit(1);
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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_pull_timeout_function(client, client_pull_timeout_func);
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gnutls_transport_set_ptr(client, client);
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ret = gnutls_priority_set_direct(client, client_prio, NULL);
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if (ret < 0) {
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fprintf(stderr, "error in %s\n", client_prio);
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exit(1);
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}
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if (expected > 0) {
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success("handshake with %s\n", client_prio);
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if (dtls) {
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HANDSHAKE_DTLS(client, server);
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} else {
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HANDSHAKE(client, server);
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}
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ret = gnutls_protocol_get_version(client);
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if (ret != expected) {
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fail("unexpected negotiated protocol %s (expected %s)\n", gnutls_protocol_get_name(ret),
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gnutls_protocol_get_name(expected));
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exit(1);
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}
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} else {
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HANDSHAKE_EXPECT(client, server, GNUTLS_E_AGAIN, GNUTLS_E_UNSUPPORTED_VERSION_PACKET);
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}
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gnutls_bye(client, GNUTLS_SHUT_RDWR);
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gnutls_bye(server, GNUTLS_SHUT_RDWR);
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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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}
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void doit(void)
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{
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global_init();
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try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.0", GNUTLS_TLS1_0);
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reset_buffers();
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try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.1", GNUTLS_TLS1_1);
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reset_buffers();
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try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.2", GNUTLS_TLS1_2);
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reset_buffers();
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try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3", GNUTLS_TLS1_3);
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reset_buffers();
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try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3:+VERS-TLS1.0", GNUTLS_TLS1_0);
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reset_buffers();
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/* similar to above test, but checks a different syntax */
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try("NORMAL:-VERS-ALL:+VERS-TLS1.3:+VERS-TLS1.1", GNUTLS_TLS1_1);
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reset_buffers();
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try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3:+VERS-TLS1.2", GNUTLS_TLS1_3);
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reset_buffers();
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/* If TLS 1.3 is enabled in the server, prefer the latest
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* possible version regardless of the client's precedence.
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* See https://gitlab.com/gnutls/gnutls/issues/837 for the
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* rationale.
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*/
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try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.2:+VERS-TLS1.3", GNUTLS_TLS1_3);
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reset_buffers();
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#ifdef ENABLE_SSL3
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try("NORMAL:-VERS-TLS-ALL:+VERS-SSL3.0", -1);
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reset_buffers();
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#endif
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try("NORMAL:-VERS-ALL:+VERS-DTLS1.0", GNUTLS_DTLS1_0);
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reset_buffers();
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try("NORMAL:-VERS-DTLS-ALL:+VERS-DTLS1.2", GNUTLS_DTLS1_2);
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reset_buffers();
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/* special test for this legacy crap */
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try("NONE:+VERS-DTLS0.9:+COMP-NULL:+AES-128-CBC:+SHA1:+RSA:%COMPAT", GNUTLS_DTLS0_9);
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reset_buffers();
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gnutls_global_deinit();
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}
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