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/*
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* Copyright (C) 2017 - 2018 ARPA2 project
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*
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* Author: Tom Vrancken (dev@tomvrancken.nl)
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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 this program. If not, see <https://www.gnu.org/licenses/>
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*/
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#include <assert.h>
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#include <gnutls/gnutls.h>
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#include <gnutls/abstract.h>
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#include <stdbool.h>
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// Credential type flags
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#define CRED_EMPTY 1<<0
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#define CRED_X509 1<<1
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#define CRED_RAWPK 1<<2
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// Test case definition
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typedef struct test_case_st {
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const char *name;
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const char *client_prio;
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const char *server_prio;
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const char set_cli_creds;
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const char set_srv_creds;
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gnutls_certificate_type_t expected_cli_ctype;
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gnutls_certificate_type_t expected_srv_ctype;
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int client_err;
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int server_err;
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unsigned int init_flags_cli;
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unsigned int init_flags_srv;
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bool request_cli_crt;
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bool cli_srv_may_diverge;
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// only needed when may_diverge is true
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gnutls_certificate_type_t expected_cli_cli_ctype; // negotiated cli ctype on the client
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gnutls_certificate_type_t expected_srv_cli_ctype; // negotiated cli ctype on the server
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gnutls_certificate_type_t expected_cli_srv_ctype; // negotiated srv ctype on the client
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gnutls_certificate_type_t expected_srv_srv_ctype; // negotiated srv ctype on the server
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} test_case_st;
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static void try(test_case_st * test)
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{
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int sret, cret; // Needed for HANDSHAKE macro
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/* To hold negotiated certificate types */
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gnutls_certificate_type_t srv_srv_ctype, srv_cli_ctype;
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gnutls_certificate_type_t cli_srv_ctype, cli_cli_ctype;
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/* To hold certificate credentials */
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gnutls_certificate_credentials_t client_creds = NULL;
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gnutls_certificate_credentials_t server_creds = NULL;
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gnutls_session_t server, client;
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// Initialize creds
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assert(gnutls_certificate_allocate_credentials(&client_creds) >= 0);
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assert(gnutls_certificate_allocate_credentials(&server_creds) >= 0);
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// Print test
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success("Running %s...\n", test->name);
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// Init client/server
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if(test->init_flags_cli) {
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assert(gnutls_init(&client, GNUTLS_CLIENT | test->init_flags_cli) >= 0);
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} else {
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assert(gnutls_init(&client, GNUTLS_CLIENT) >= 0);
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}
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if (test->init_flags_srv) {
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assert(gnutls_init(&server, GNUTLS_SERVER | test->init_flags_srv) >= 0);
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} else {
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assert(gnutls_init(&server, GNUTLS_SERVER) >= 0);
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}
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/* Set up our credentials for this handshake */
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// Test for using empty cli credentials
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if (test->set_cli_creds == CRED_EMPTY) {
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gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE, client_creds);
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} else {
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// Test for using X509 cli credentials
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if (test->set_cli_creds & CRED_X509) {
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assert(gnutls_certificate_set_x509_key_mem
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(client_creds, &cli_ca3_cert, &cli_ca3_key, GNUTLS_X509_FMT_PEM) >= 0);
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}
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// Test for using RawPubKey cli credentials
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if (test->set_cli_creds & CRED_RAWPK) {
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assert(gnutls_certificate_set_rawpk_key_mem(client_creds,
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&rawpk_public_key1, &rawpk_private_key1, GNUTLS_X509_FMT_PEM,
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NULL, 0, NULL, 0, 0) >= 0);
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}
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// -- Add extra ctype creds here in the future --
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// Finally set the credentials
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gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE, client_creds);
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}
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// Test for using empty srv credentials
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if (test->set_srv_creds == CRED_EMPTY) {
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gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE, server_creds);
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} else {
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// Test for using X509 srv credentials
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if (test->set_srv_creds & CRED_X509) {
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assert(gnutls_certificate_set_x509_key_mem
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(server_creds, &server_ca3_localhost_rsa_decrypt_cert,
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&server_ca3_key, GNUTLS_X509_FMT_PEM) >= 0);
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assert(gnutls_certificate_set_x509_key_mem
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(server_creds, &server_ca3_localhost_ecc_cert,
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&server_ca3_ecc_key, GNUTLS_X509_FMT_PEM) >= 0);
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assert(gnutls_certificate_set_x509_key_mem
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(server_creds, &server_ca3_localhost_rsa_sign_cert,
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&server_ca3_key, GNUTLS_X509_FMT_PEM) >= 0);
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gnutls_certificate_set_known_dh_params(server_creds,
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GNUTLS_SEC_PARAM_MEDIUM);
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}
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// Test for using RawPubKey srv credentials
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if (test->set_srv_creds & CRED_RAWPK) {
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assert(gnutls_certificate_set_rawpk_key_mem(server_creds,
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&rawpk_public_key2, &rawpk_private_key2, GNUTLS_X509_FMT_PEM,
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NULL, 0, NULL, 0, 0) >= 0);
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}
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// -- Add extra ctype creds here in the future --
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// Finally set the credentials
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gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE, server_creds);
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}
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// Server settings
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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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assert(gnutls_priority_set_direct(server, test->server_prio, 0) >= 0);
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if (test->request_cli_crt)
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gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUEST);
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// Client settings
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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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assert(gnutls_priority_set_direct(client, test->client_prio, 0) >= 0);
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// Try handshake
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if (test->client_err && test->server_err) {
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/* We expect errors during the handshake and don't check
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* any negotiated certificate types */
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HANDSHAKE_EXPECT(client, server, test->client_err, test->server_err);
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} else {
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/* We expect a handshake without errors and check the negotiated
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* certificate types */
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HANDSHAKE(client, server);
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/* Get the negotiated certificate types */
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srv_srv_ctype =
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gnutls_certificate_type_get2(server, GNUTLS_CTYPE_SERVER);
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srv_cli_ctype =
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gnutls_certificate_type_get2(server, GNUTLS_CTYPE_CLIENT);
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cli_srv_ctype =
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gnutls_certificate_type_get2(client, GNUTLS_CTYPE_SERVER);
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cli_cli_ctype =
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gnutls_certificate_type_get2(client, GNUTLS_CTYPE_CLIENT);
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// For debugging
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if (debug) {
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success("Srv srv ctype: %s\n", gnutls_certificate_type_get_name(srv_srv_ctype));
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success("Srv cli ctype: %s\n", gnutls_certificate_type_get_name(srv_cli_ctype));
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success("Cli srv ctype: %s\n", gnutls_certificate_type_get_name(cli_srv_ctype));
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success("Cli srv ctype: %s\n", gnutls_certificate_type_get_name(cli_cli_ctype));
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}
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/* Check whether the negotiated certificate types match the expected results */
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if (test->cli_srv_may_diverge) {
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// Matching expected client ctype at client
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if (cli_cli_ctype != test->expected_cli_cli_ctype) {
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fail("%s: negotiated client ctype at client diffs the expected (%s, %s)!\n", test->name, gnutls_certificate_type_get_name(cli_cli_ctype), gnutls_certificate_type_get_name(test->expected_cli_cli_ctype));
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}
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// Matching expected server ctype at client
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if (cli_srv_ctype != test->expected_cli_srv_ctype) {
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fail("%s: negotiated server ctype at client diffs the expected (%s, %s)!\n", test->name, gnutls_certificate_type_get_name(cli_srv_ctype), gnutls_certificate_type_get_name(test->expected_cli_srv_ctype));
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}
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// Matching expected client ctype at server
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if (srv_cli_ctype != test->expected_srv_cli_ctype) {
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fail("%s: negotiated client ctype at server diffs the expected (%s, %s)!\n", test->name, gnutls_certificate_type_get_name(srv_cli_ctype), gnutls_certificate_type_get_name(test->expected_srv_cli_ctype));
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}
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// Matching expected server ctype at server
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if (srv_srv_ctype != test->expected_srv_srv_ctype) {
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fail("%s: negotiated client ctype at client diffs the expected (%s, %s)!\n", test->name, gnutls_certificate_type_get_name(srv_srv_ctype), gnutls_certificate_type_get_name(test->expected_srv_srv_ctype));
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}
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} else {
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// Matching server ctype
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if (srv_srv_ctype != cli_srv_ctype) {
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fail("%s: client negotiated different server ctype than server (%s, %s)!\n", test->name, gnutls_certificate_type_get_name(cli_srv_ctype), gnutls_certificate_type_get_name(srv_srv_ctype));
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}
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// Matching client ctype
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if (srv_cli_ctype != cli_cli_ctype) {
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fail("%s: client negotiated different client ctype than server (%s, %s)!\n", test->name, gnutls_certificate_type_get_name(cli_cli_ctype), gnutls_certificate_type_get_name(srv_cli_ctype));
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}
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// Matching expected server ctype
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if (srv_srv_ctype != test->expected_srv_ctype) {
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fail("%s: negotiated server ctype diffs the expected (%s, %s)!\n", test->name, gnutls_certificate_type_get_name(srv_srv_ctype), gnutls_certificate_type_get_name(test->expected_srv_ctype));
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}
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// Matching expected client ctype
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if (srv_cli_ctype != test->expected_cli_ctype) {
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fail("%s: negotiated client ctype diffs the expected (%s, %s)!\n", test->name, gnutls_certificate_type_get_name(srv_cli_ctype), gnutls_certificate_type_get_name(test->expected_cli_ctype));
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}
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/* Check whether the API functions return the correct cert types for OURS and PEERS */
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assert(srv_srv_ctype == gnutls_certificate_type_get2(server, GNUTLS_CTYPE_OURS));
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assert(srv_srv_ctype == gnutls_certificate_type_get2(client, GNUTLS_CTYPE_PEERS));
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assert(cli_cli_ctype == gnutls_certificate_type_get2(server, GNUTLS_CTYPE_PEERS));
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assert(cli_cli_ctype == gnutls_certificate_type_get2(client, GNUTLS_CTYPE_OURS));
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}
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}
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// Cleanup
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gnutls_deinit(server);
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gnutls_deinit(client);
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gnutls_certificate_free_credentials(client_creds);
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gnutls_certificate_free_credentials(server_creds);
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reset_buffers();
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}
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