/*
* Copyright (C) 2015-2016 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* GnuTLS is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuTLS is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GnuTLS; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* This program tests the various certificate key exchange methods supported
* in gnutls */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gnutls/gnutls.h>
#include <gnutls/dtls.h>
#include "utils.h"
#include <assert.h>
#include "eagain-common.h"
#include "common-cert-key-exchange.h"
const char *side;
const char *server_priority = NULL;
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s|<%d>| %s", side, level, str);
}
#define MSG "hello there ppl"
void try_with_key_fail(const char *name, const char *client_prio,
int server_err, int client_err,
const gnutls_datum_t *serv_cert,
const gnutls_datum_t *serv_key,
const gnutls_datum_t *cli_cert,
const gnutls_datum_t *cli_key)
{
int ret;
/* Server stuff. */
gnutls_certificate_credentials_t serverx509cred;
gnutls_session_t server;
int sret = GNUTLS_E_AGAIN;
/* Client stuff. */
gnutls_certificate_credentials_t clientx509cred;
gnutls_session_t client;
int cret = GNUTLS_E_AGAIN;
const char *err;
/* General init. */
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
reset_buffers();
/* Init server */
assert(gnutls_certificate_allocate_credentials(&serverx509cred)>=0);
ret = gnutls_certificate_set_x509_key_mem(serverx509cred,
serv_cert, serv_key,
GNUTLS_X509_FMT_PEM);
if (ret < 0)
fail("Could not set key/cert: %s\n", gnutls_strerror(ret));
assert(gnutls_init(&server, GNUTLS_SERVER)>=0);
if (server_priority)
assert(gnutls_priority_set_direct(server, server_priority, NULL) >= 0);
else
assert(gnutls_priority_set_direct(server, client_prio, NULL) >= 0);
assert(gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
serverx509cred)>=0);
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_ptr(server, server);
/* Init client */
ret = gnutls_certificate_allocate_credentials(&clientx509cred);
if (ret < 0)
exit(1);
if (cli_cert) {
gnutls_certificate_set_x509_key_mem(clientx509cred,
cli_cert, cli_key,
GNUTLS_X509_FMT_PEM);
gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUIRE);
}
ret = gnutls_init(&client, GNUTLS_CLIENT);
if (ret < 0)
exit(1);
gnutls_transport_set_push_function(client, client_push);
gnutls_transport_set_pull_function(client, client_pull);
gnutls_transport_set_ptr(client, client);
ret = gnutls_priority_set_direct(client, client_prio, &err);
if (ret < 0) {
if (ret == GNUTLS_E_INVALID_REQUEST)
fprintf(stderr, "Error in %s\n", err);
exit(1);
}
ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
clientx509cred);
if (ret < 0)
exit(1);
success("negotiating %s\n", name);
HANDSHAKE_EXPECT(client, server, client_err, server_err);
gnutls_deinit(client);
gnutls_deinit(server);
gnutls_certificate_free_credentials(serverx509cred);
gnutls_certificate_free_credentials(clientx509cred);
}
void try_with_rawpk_key_fail(const char *name, const char *client_prio,
int server_err, int client_err,
const gnutls_datum_t *serv_cert,
const gnutls_datum_t *serv_key,
unsigned server_ku,
const gnutls_datum_t *cli_cert,
const gnutls_datum_t *cli_key,
unsigned client_ku)
{
int ret;
/* Server stuff. */
gnutls_certificate_credentials_t server_cred;
gnutls_session_t server;
int sret = GNUTLS_E_AGAIN;
/* Client stuff. */
gnutls_certificate_credentials_t client_cred;
gnutls_session_t client;
int cret = GNUTLS_E_AGAIN;
const char *err;
/* General init. */
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
reset_buffers();
/* Init server */
gnutls_certificate_allocate_credentials(&server_cred);
ret = gnutls_certificate_set_rawpk_key_mem(server_cred,
serv_cert, serv_key, GNUTLS_X509_FMT_PEM, NULL, server_ku,
NULL, 0, 0);
if (ret < 0)
fail("Could not set key/cert: %s\n", gnutls_strerror(ret));
assert(gnutls_init(&server, GNUTLS_SERVER | GNUTLS_ENABLE_RAWPK) >= 0);
if (server_priority)
assert(gnutls_priority_set_direct(server, server_priority, NULL) >= 0);
else
assert(gnutls_priority_set_direct(server, client_prio, NULL) >= 0);
gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
server_cred);
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_ptr(server, server);
/* Init client */
ret = gnutls_certificate_allocate_credentials(&client_cred);
if (ret < 0)
exit(1);
if (cli_cert) {
ret = gnutls_certificate_set_rawpk_key_mem(client_cred,
cli_cert, cli_key, GNUTLS_X509_FMT_PEM, NULL, client_ku,
NULL, 0, 0);
if (ret < 0)
fail("Could not set key/cert: %s\n", gnutls_strerror(ret));
gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUIRE);
}
ret = gnutls_init(&client, GNUTLS_CLIENT|GNUTLS_ENABLE_RAWPK);
if (ret < 0)
exit(1);
gnutls_transport_set_push_function(client, client_push);
gnutls_transport_set_pull_function(client, client_pull);
gnutls_transport_set_ptr(client, client);
ret = gnutls_priority_set_direct(client, client_prio, &err);
if (ret < 0) {
if (ret == GNUTLS_E_INVALID_REQUEST)
fprintf(stderr, "Error in %s\n", err);
exit(1);
}
ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
client_cred);
if (ret < 0)
exit(1);
success("negotiating %s\n", name);
HANDSHAKE_EXPECT(client, server, client_err, server_err);
gnutls_deinit(client);
gnutls_deinit(server);
gnutls_certificate_free_credentials(server_cred);
gnutls_certificate_free_credentials(client_cred);
}
void try_with_key_ks(const char *name, const char *client_prio, gnutls_kx_algorithm_t client_kx,
gnutls_sign_algorithm_t server_sign_algo,
gnutls_sign_algorithm_t client_sign_algo,
const gnutls_datum_t *serv_cert,
const gnutls_datum_t *serv_key,
const gnutls_datum_t *client_cert,
const gnutls_datum_t *client_key,
unsigned cert_flags,
unsigned exp_group,
gnutls_certificate_type_t server_ctype,
gnutls_certificate_type_t client_ctype)
{
int ret;
char buffer[256];
/* Server stuff. */
gnutls_certificate_credentials_t server_cred;
gnutls_anon_server_credentials_t s_anoncred;
gnutls_dh_params_t dh_params;
const gnutls_datum_t p3 =
{ (unsigned char *) pkcs3, strlen(pkcs3) };
gnutls_session_t server;
int sret = GNUTLS_E_AGAIN;
/* Client stuff. */
gnutls_certificate_credentials_t client_cred;
gnutls_anon_client_credentials_t c_anoncred;
gnutls_session_t client;
int cret = GNUTLS_E_AGAIN, version;
const char *err;
/* General init. */
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
reset_buffers();
/* Init server */
assert(gnutls_anon_allocate_server_credentials(&s_anoncred)>=0);
assert(gnutls_certificate_allocate_credentials(&server_cred)>=0);
// Set server crt creds based on ctype
switch (server_ctype) {
case GNUTLS_CRT_X509:
ret = gnutls_certificate_set_x509_key_mem(server_cred,
serv_cert, serv_key,
GNUTLS_X509_FMT_PEM);
break;
case GNUTLS_CRT_RAWPK:
ret = gnutls_certificate_set_rawpk_key_mem(server_cred,
serv_cert, serv_key, GNUTLS_X509_FMT_PEM, NULL, 0,
NULL, 0, 0);
break;
default:
ret = GNUTLS_E_UNSUPPORTED_CERTIFICATE_TYPE;
}
if (ret < 0) {
fail("Could not set key/cert: %s\n", gnutls_strerror(ret));
}
gnutls_dh_params_init(&dh_params);
gnutls_dh_params_import_pkcs3(dh_params, &p3, GNUTLS_X509_FMT_PEM);
gnutls_certificate_set_dh_params(server_cred, dh_params);
gnutls_anon_set_server_dh_params(s_anoncred, dh_params);
assert(gnutls_init(&server, GNUTLS_SERVER | GNUTLS_ENABLE_RAWPK)>=0);
assert(gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
server_cred)>=0);
assert(gnutls_credentials_set(server, GNUTLS_CRD_ANON, s_anoncred)>=0);
if (server_priority)
assert(gnutls_priority_set_direct(server, server_priority, NULL) >= 0);
else
assert(gnutls_priority_set_direct(server,
"NORMAL:+VERS-SSL3.0:+ANON-ECDH:+ANON-DH:+ECDHE-RSA:+DHE-RSA:+RSA:+ECDHE-ECDSA:+CURVE-X25519:+SIGN-EDDSA-ED25519:+CTYPE-ALL",
NULL)>=0);
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_ptr(server, server);
/* Init client */
ret = gnutls_certificate_allocate_credentials(&client_cred);
if (ret < 0)
exit(1);
if (cert_flags == USE_CERT) {
// Set client crt creds based on ctype
switch (client_ctype) {
case GNUTLS_CRT_X509:
gnutls_certificate_set_x509_key_mem(client_cred,
client_cert, client_key,
GNUTLS_X509_FMT_PEM);
break;
case GNUTLS_CRT_RAWPK:
gnutls_certificate_set_rawpk_key_mem(client_cred,
client_cert, client_key, GNUTLS_X509_FMT_PEM, NULL, 0,
NULL, 0, 0);
break;
default:
fail("Illegal client certificate type given\n");
}
gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUIRE);
} else if (cert_flags == ASK_CERT) {
gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUEST);
}
#if 0
ret = gnutls_certificate_set_x509_trust_mem(client_cred, &ca_cert, GNUTLS_X509_FMT_PEM);
if (ret < 0)
exit(1);
#endif
ret = gnutls_init(&client, GNUTLS_CLIENT | GNUTLS_ENABLE_RAWPK);
if (ret < 0)
exit(1);
assert(gnutls_anon_allocate_client_credentials(&c_anoncred)>=0);
assert(gnutls_credentials_set(client, GNUTLS_CRD_ANON, c_anoncred)>=0);
ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
client_cred);
if (ret < 0)
exit(1);
gnutls_transport_set_push_function(client, client_push);
gnutls_transport_set_pull_function(client, client_pull);
gnutls_transport_set_ptr(client, client);
ret = gnutls_priority_set_direct(client, client_prio, &err);
if (ret < 0) {
if (ret == GNUTLS_E_INVALID_REQUEST)
fprintf(stderr, "Error in %s\n", err);
exit(1);
}
success("negotiating %s\n", name);
HANDSHAKE(client, server);
if (gnutls_kx_get(client) != client_kx) {
fail("%s: got unexpected key exchange algorithm: %s (expected %s)\n", name, gnutls_kx_get_name(gnutls_kx_get(client)),
gnutls_kx_get_name(client_kx));
exit(1);
}
/* test signature algorithm match */
version = gnutls_protocol_get_version(client);
if (version >= GNUTLS_TLS1_2) {
ret = gnutls_sign_algorithm_get(server);
if (ret != (int)server_sign_algo) {
fail("%s: got unexpected server signature algorithm: %d/%s\n", name, ret, gnutls_sign_get_name(ret));
exit(1);
}
ret = gnutls_sign_algorithm_get_client(server);
if (ret != (int)client_sign_algo) {
fail("%s: got unexpected client signature algorithm: %d/%s\n", name, ret, gnutls_sign_get_name(ret));
exit(1);
}
ret = gnutls_sign_algorithm_get(client);
if (ret != (int)server_sign_algo) {
fail("%s: cl: got unexpected server signature algorithm: %d/%s\n", name, ret, gnutls_sign_get_name(ret));
exit(1);
}
ret = gnutls_sign_algorithm_get_client(client);
if (ret != (int)client_sign_algo) {
fail("%s: cl: got unexpected client signature algorithm: %d/%s\n", name, ret, gnutls_sign_get_name(ret));
exit(1);
}
}
if (exp_group != 0) {
ret = gnutls_group_get(server);
if (ret != (int)exp_group) {
fail("%s: got unexpected server group: %d/%s\n", name, ret, gnutls_group_get_name(ret));
}
ret = gnutls_group_get(client);
if (ret != (int)exp_group) {
fail("%s: got unexpected client group: %d/%s\n", name, ret, gnutls_group_get_name(ret));
}
}
gnutls_record_send(server, MSG, strlen(MSG));
ret = gnutls_record_recv(client, buffer, sizeof(buffer));
if (ret == 0) {
fail("client: Peer has closed the TLS connection\n");
exit(1);
} else if (ret < 0) {
fail("client: Error: %s\n", gnutls_strerror(ret));
exit(1);
}
if (ret != strlen(MSG) || memcmp(MSG, buffer, ret) != 0) {
fail("client: Error in data received. Expected %d, got %d\n", (int)strlen(MSG), ret);
exit(1);
}
gnutls_bye(client, GNUTLS_SHUT_RDWR);
gnutls_bye(server, GNUTLS_SHUT_RDWR);
gnutls_deinit(client);
gnutls_deinit(server);
gnutls_certificate_free_credentials(server_cred);
gnutls_certificate_free_credentials(client_cred);
gnutls_anon_free_server_credentials(s_anoncred);
gnutls_anon_free_client_credentials(c_anoncred);
gnutls_dh_params_deinit(dh_params);
}
void dtls_try_with_key_mtu(const char *name, const char *client_prio, gnutls_kx_algorithm_t client_kx,
gnutls_sign_algorithm_t server_sign_algo,
gnutls_sign_algorithm_t client_sign_algo,
const gnutls_datum_t *serv_cert,
const gnutls_datum_t *serv_key,
const gnutls_datum_t *client_cert,
const gnutls_datum_t *client_key,
unsigned cert_flags,
unsigned smtu)
{
int ret;
char buffer[256];
/* Server stuff. */
gnutls_certificate_credentials_t serverx509cred;
gnutls_anon_server_credentials_t s_anoncred;
gnutls_dh_params_t dh_params;
const gnutls_datum_t p3 =
{ (unsigned char *) pkcs3, strlen(pkcs3) };
gnutls_session_t server;
int sret = GNUTLS_E_AGAIN;
/* Client stuff. */
gnutls_certificate_credentials_t clientx509cred;
gnutls_anon_client_credentials_t c_anoncred;
gnutls_session_t client;
int cret = GNUTLS_E_AGAIN, version;
/* General init. */
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
reset_buffers();
/* Init server */
gnutls_anon_allocate_server_credentials(&s_anoncred);
gnutls_certificate_allocate_credentials(&serverx509cred);
ret = gnutls_certificate_set_x509_key_mem(serverx509cred,
serv_cert, serv_key,
GNUTLS_X509_FMT_PEM);
if (ret < 0) {
fail("Could not set key/cert: %s\n", gnutls_strerror(ret));
}
gnutls_dh_params_init(&dh_params);
gnutls_dh_params_import_pkcs3(dh_params, &p3, GNUTLS_X509_FMT_PEM);
gnutls_certificate_set_dh_params(serverx509cred, dh_params);
gnutls_anon_set_server_dh_params(s_anoncred, dh_params);
assert(gnutls_init(&server, GNUTLS_SERVER|GNUTLS_DATAGRAM|GNUTLS_NONBLOCK)>=0);
assert(gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
serverx509cred)>=0);
assert(gnutls_credentials_set(server, GNUTLS_CRD_ANON, s_anoncred)>=0);
assert(gnutls_priority_set_direct(server,
"NORMAL:+ANON-ECDH:+ANON-DH:+ECDHE-RSA:+DHE-RSA:+RSA:+ECDHE-ECDSA:+CURVE-X25519",
NULL)>=0);
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_pull_timeout_function(server, server_pull_timeout_func);
gnutls_transport_set_ptr(server, server);
if (smtu)
gnutls_dtls_set_mtu (server, smtu);
/* Init client */
ret = gnutls_certificate_allocate_credentials(&clientx509cred);
if (ret < 0)
exit(1);
if (cert_flags == USE_CERT) {
ret = gnutls_certificate_set_x509_key_mem(clientx509cred,
client_cert, client_key,
GNUTLS_X509_FMT_PEM);
if (ret < 0) {
fail("Could not set key/cert: %s\n", gnutls_strerror(ret));
}
gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUIRE);
} else if (cert_flags == ASK_CERT) {
gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUEST);
}
#if 0
ret = gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca_cert, GNUTLS_X509_FMT_PEM);
if (ret < 0)
exit(1);
#endif
ret = gnutls_init(&client, GNUTLS_CLIENT|GNUTLS_DATAGRAM|GNUTLS_NONBLOCK);
if (ret < 0)
exit(1);
assert(gnutls_anon_allocate_client_credentials(&c_anoncred)>=0);
assert(gnutls_credentials_set(client, GNUTLS_CRD_ANON, c_anoncred)>=0);
ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
clientx509cred);
if (ret < 0)
exit(1);
gnutls_transport_set_push_function(client, client_push);
gnutls_transport_set_pull_function(client, client_pull);
gnutls_transport_set_pull_timeout_function(client, client_pull_timeout_func);
gnutls_transport_set_ptr(client, client);
if (smtu)
gnutls_dtls_set_mtu (client, smtu);
ret = gnutls_priority_set_direct(client, client_prio, NULL);
if (ret < 0) {
exit(1);
}
success("negotiating %s\n", name);
HANDSHAKE_DTLS(client, server);
if (gnutls_kx_get(client) != client_kx) {
fail("%s: got unexpected key exchange algorithm: %s (expected %s)\n", name, gnutls_kx_get_name(gnutls_kx_get(client)),
gnutls_kx_get_name(client_kx));
exit(1);
}
/* test signature algorithm match */
version = gnutls_protocol_get_version(client);
if (version >= GNUTLS_DTLS1_2) {
ret = gnutls_sign_algorithm_get(server);
if (ret != (int)server_sign_algo) {
fail("%s: got unexpected server signature algorithm: %d/%s\n", name, ret, gnutls_sign_get_name(ret));
exit(1);
}
ret = gnutls_sign_algorithm_get_client(server);
if (ret != (int)client_sign_algo) {
fail("%s: got unexpected client signature algorithm: %d/%s\n", name, ret, gnutls_sign_get_name(ret));
exit(1);
}
ret = gnutls_sign_algorithm_get(client);
if (ret != (int)server_sign_algo) {
fail("%s: cl: got unexpected server signature algorithm: %d/%s\n", name, ret, gnutls_sign_get_name(ret));
exit(1);
}
ret = gnutls_sign_algorithm_get_client(client);
if (ret != (int)client_sign_algo) {
fail("%s: cl: got unexpected client signature algorithm: %d/%s\n", name, ret, gnutls_sign_get_name(ret));
exit(1);
}
}
gnutls_record_send(server, MSG, strlen(MSG));
ret = gnutls_record_recv(client, buffer, sizeof(buffer));
if (ret == 0) {
fail("client: Peer has closed the TLS connection\n");
exit(1);
} else if (ret < 0) {
fail("client: Error: %s\n", gnutls_strerror(ret));
exit(1);
}
if (ret != strlen(MSG) || memcmp(MSG, buffer, ret) != 0) {
fail("client: Error in data received. Expected %d, got %d\n", (int)strlen(MSG), ret);
exit(1);
}
gnutls_bye(client, GNUTLS_SHUT_RDWR);
gnutls_bye(server, GNUTLS_SHUT_RDWR);
gnutls_deinit(client);
gnutls_deinit(server);
gnutls_certificate_free_credentials(serverx509cred);
gnutls_certificate_free_credentials(clientx509cred);
gnutls_anon_free_server_credentials(s_anoncred);
gnutls_anon_free_client_credentials(c_anoncred);
gnutls_dh_params_deinit(dh_params);
}