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|
/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <sys/wait.h>
#include <unistd.h>
#include "api/s2n.h"
#include "s2n_test.h"
#include "testlib/s2n_sslv2_client_hello.h"
#include "testlib/s2n_testlib.h"
#include "tls/s2n_client_hello.h"
#include "tls/s2n_connection.h"
#include "tls/s2n_quic_support.h"
#include "tls/s2n_tls.h"
#include "tls/s2n_tls13.h"
#include "utils/s2n_blob.h"
#include "utils/s2n_safety.h"
int main(int argc, char **argv)
{
struct s2n_connection *server_conn;
struct s2n_connection *client_conn;
struct s2n_stuffer *hello_stuffer;
struct s2n_config *tls12_config;
struct s2n_config *tls13_config;
struct s2n_cert_chain_and_key *chain_and_key;
struct s2n_cert_chain_and_key *tls13_chain_and_key;
char *cert_chain;
char *tls13_cert_chain;
char *private_key;
char *tls13_private_key;
BEGIN_TEST();
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
EXPECT_NOT_NULL(cert_chain = malloc(S2N_MAX_TEST_PEM_SIZE));
EXPECT_NOT_NULL(private_key = malloc(S2N_MAX_TEST_PEM_SIZE));
EXPECT_NOT_NULL(tls12_config = s2n_config_new());
EXPECT_NOT_NULL(chain_and_key = s2n_cert_chain_and_key_new());
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(tls12_config, "test_all_tls12"));
EXPECT_NOT_NULL(tls13_cert_chain = malloc(S2N_MAX_TEST_PEM_SIZE));
EXPECT_NOT_NULL(tls13_private_key = malloc(S2N_MAX_TEST_PEM_SIZE));
EXPECT_NOT_NULL(tls13_config = s2n_config_new());
EXPECT_NOT_NULL(tls13_chain_and_key = s2n_cert_chain_and_key_new());
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(tls13_config, "test_all"));
EXPECT_SUCCESS(s2n_read_test_pem(S2N_DEFAULT_TEST_CERT_CHAIN, cert_chain, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_read_test_pem(S2N_DEFAULT_TEST_PRIVATE_KEY, private_key, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_cert_chain_and_key_load_pem(chain_and_key, cert_chain, private_key));
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(tls12_config, chain_and_key));
EXPECT_SUCCESS(s2n_read_test_pem(S2N_ECDSA_P384_PKCS1_CERT_CHAIN, tls13_cert_chain, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_read_test_pem(S2N_ECDSA_P384_PKCS1_KEY, tls13_private_key, S2N_MAX_TEST_PEM_SIZE));
EXPECT_SUCCESS(s2n_cert_chain_and_key_load_pem(tls13_chain_and_key, tls13_cert_chain, tls13_private_key));
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(tls13_config, tls13_chain_and_key));
/* These tests verify the logic behind the setting of these three connection fields:
server_protocol_version, client_protocol_version, and actual_protocol version. */
/* Test we can successfully receive an sslv2 client hello and set a
* tls12 connection */
for (uint8_t i = 0; i < 2; i++) {
if (i == 1) {
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
}
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls12_config));
/* Record version and protocol version are in the header for SSLv2 */
server_conn->client_hello_version = S2N_SSLv2;
server_conn->client_protocol_version = S2N_TLS12;
uint8_t sslv2_client_hello[] = {
SSLv2_CLIENT_HELLO_PREFIX,
SSLv2_CLIENT_HELLO_CIPHER_SUITES,
SSLv2_CLIENT_HELLO_CHALLENGE,
};
struct s2n_blob client_hello = {
.data = sslv2_client_hello,
.size = sizeof(sslv2_client_hello),
.allocated = 0,
.growable = 0
};
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &client_hello));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
EXPECT_EQUAL(server_conn->server_protocol_version, i == 0 ? S2N_TLS12 : S2N_TLS13);
EXPECT_EQUAL(server_conn->actual_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_hello_version, S2N_SSLv2);
EXPECT_EQUAL(server_conn->client_hello.callback_invoked, 1);
s2n_connection_free(server_conn);
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
}
/* Test that a tls12 client legacy version and tls12 server version
will successfully set a tls12 connection, since tls13 is not enabled. */
{
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls12_config));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls12_config));
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
EXPECT_EQUAL(client_conn->actual_protocol_version, S2N_TLS12);
EXPECT_EQUAL(client_conn->client_protocol_version, S2N_TLS12);
EXPECT_EQUAL(client_conn->client_hello_version, S2N_TLS12);
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &client_conn->handshake.io.blob));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
EXPECT_EQUAL(server_conn->server_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->actual_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_protocol_version, S2N_TLS12);
s2n_connection_free(server_conn);
s2n_connection_free(client_conn);
};
/* Test that a tls12 client legacy version and tls12 server version
will successfully set a tls12 connection, even when tls13 is enabled. */
{
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls12_config));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls12_config));
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
EXPECT_EQUAL(client_conn->actual_protocol_version, S2N_TLS12);
EXPECT_EQUAL(client_conn->client_protocol_version, S2N_TLS12);
EXPECT_EQUAL(client_conn->client_hello_version, S2N_TLS12);
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &client_conn->handshake.io.blob));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
EXPECT_EQUAL(server_conn->server_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->actual_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_hello_version, S2N_TLS12);
s2n_connection_free(server_conn);
s2n_connection_free(client_conn);
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
};
/* Test that a tls11 client legacy version and tls12 server version
will successfully set a tls11 connection. */
for (uint8_t i = 0; i < 2; i++) {
if (i == 1) {
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
}
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls12_config));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls12_config));
client_conn->client_protocol_version = S2N_TLS11;
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
EXPECT_EQUAL(client_conn->client_hello_version, S2N_TLS11);
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &client_conn->handshake.io.blob));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
EXPECT_EQUAL(server_conn->server_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->actual_protocol_version, S2N_TLS11);
EXPECT_EQUAL(server_conn->client_protocol_version, S2N_TLS11);
EXPECT_EQUAL(server_conn->client_hello_version, S2N_TLS11);
s2n_connection_free(server_conn);
s2n_connection_free(client_conn);
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
}
/* Test that a tls12 client and tls13 server will successfully
set a tls12 connection. */
{
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls12_config));
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls13_config));
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
EXPECT_EQUAL(client_conn->client_protocol_version, S2N_TLS12);
EXPECT_EQUAL(client_conn->client_hello_version, S2N_TLS12);
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &client_conn->handshake.io.blob));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
EXPECT_EQUAL(server_conn->server_protocol_version, S2N_TLS13);
EXPECT_EQUAL(server_conn->actual_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_hello_version, S2N_TLS12);
s2n_connection_free(server_conn);
s2n_connection_free(client_conn);
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
};
/* Test that an erroneous client legacy version and tls13 server version
will still successfully set a tls13 connection, when real client version is tls13. */
{
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls13_config));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls12_config));
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(client_conn, "default_tls13"));
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(server_conn, "default_tls13"));
hello_stuffer = &client_conn->handshake.io;
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
/* Overwrite the client legacy version so that it reads tls13 (incorrectly) */
uint8_t incorrect_protocol_version[S2N_TLS_PROTOCOL_VERSION_LEN];
incorrect_protocol_version[0] = S2N_TLS13 / 10;
incorrect_protocol_version[1] = S2N_TLS13 % 10;
EXPECT_SUCCESS(s2n_stuffer_rewrite(hello_stuffer));
EXPECT_SUCCESS(s2n_stuffer_write_bytes(hello_stuffer, incorrect_protocol_version, S2N_TLS_PROTOCOL_VERSION_LEN));
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &hello_stuffer->blob));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
EXPECT_EQUAL(client_conn->actual_protocol_version, s2n_get_highest_fully_supported_tls_version());
EXPECT_EQUAL(client_conn->client_protocol_version, s2n_get_highest_fully_supported_tls_version());
EXPECT_EQUAL(client_conn->client_hello_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->server_protocol_version, S2N_TLS13);
EXPECT_EQUAL(server_conn->actual_protocol_version, s2n_get_highest_fully_supported_tls_version());
EXPECT_EQUAL(server_conn->client_protocol_version, s2n_get_highest_fully_supported_tls_version());
EXPECT_EQUAL(server_conn->client_hello_version, S2N_TLS12);
s2n_connection_free(server_conn);
s2n_connection_free(client_conn);
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
};
/* Test that a tls12 client legacy version and tls13 server version
will still successfully set a tls13 connection, if possible. */
{
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls13_config));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls12_config));
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(client_conn, "default_tls13"));
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(server_conn, "default_tls13"));
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &client_conn->handshake.io.blob));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
EXPECT_EQUAL(server_conn->server_protocol_version, S2N_TLS13);
EXPECT_EQUAL(server_conn->actual_protocol_version, s2n_get_highest_fully_supported_tls_version());
EXPECT_EQUAL(server_conn->client_protocol_version, s2n_get_highest_fully_supported_tls_version());
EXPECT_EQUAL(server_conn->client_hello_version, S2N_TLS12);
s2n_connection_free(server_conn);
s2n_connection_free(client_conn);
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
};
/* Test that an erroneous(tls13) client legacy version and tls13 server version
will still successfully set a tls12 connection, if tls12 is the true client version. */
{
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls12_config));
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls12_config));
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(server_conn, "default_tls13"));
hello_stuffer = &client_conn->handshake.io;
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
/* Overwrite the client legacy version so that it reads tls13 (incorrectly) */
uint8_t incorrect_protocol_version[S2N_TLS_PROTOCOL_VERSION_LEN];
incorrect_protocol_version[0] = S2N_TLS13 / 10;
incorrect_protocol_version[1] = S2N_TLS13 % 10;
EXPECT_SUCCESS(s2n_stuffer_rewrite(hello_stuffer));
EXPECT_SUCCESS(s2n_stuffer_write_bytes(hello_stuffer, incorrect_protocol_version, S2N_TLS_PROTOCOL_VERSION_LEN));
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &hello_stuffer->blob));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
EXPECT_EQUAL(server_conn->server_protocol_version, s2n_get_highest_fully_supported_tls_version());
EXPECT_EQUAL(server_conn->actual_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_hello_version, S2N_TLS12);
s2n_connection_free(server_conn);
s2n_connection_free(client_conn);
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
};
/* s2n receiving a client hello will error when parsing an empty cipher suite */
{
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls13_config));
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(client_conn, "default_tls13"));
hello_stuffer = &client_conn->handshake.io;
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
uint8_t empty_cipher_suite[S2N_TLS_CIPHER_SUITE_LEN] = { 0 };
/* Move write_cursor to cipher_suite position */
EXPECT_SUCCESS(s2n_stuffer_rewrite(hello_stuffer));
EXPECT_SUCCESS(s2n_stuffer_skip_write(hello_stuffer, S2N_TLS_PROTOCOL_VERSION_LEN + S2N_TLS_RANDOM_DATA_LEN + 1));
EXPECT_SUCCESS(s2n_stuffer_write_bytes(hello_stuffer, empty_cipher_suite, S2N_TLS_CIPHER_SUITE_LEN));
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &hello_stuffer->blob));
EXPECT_FAILURE_WITH_ERRNO(s2n_client_hello_recv(server_conn), S2N_ERR_BAD_MESSAGE);
s2n_connection_free(server_conn);
s2n_connection_free(client_conn);
};
/* s2n receiving a sslv2 client hello will error when parsing an empty cipher suite */
{
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls12_config));
/* Record version and protocol version are in the header for SSLv2 */
server_conn->client_hello_version = S2N_SSLv2;
server_conn->client_protocol_version = S2N_TLS12;
/* Writing a sslv2 client hello with a length 0 cipher suite list */
uint8_t sslv2_client_hello[] = {
0x00,
0x00,
0x00,
0x00,
0x00,
0x20,
SSLv2_CLIENT_HELLO_CIPHER_SUITES,
SSLv2_CLIENT_HELLO_CHALLENGE,
};
struct s2n_blob client_hello = {
.data = sslv2_client_hello,
.size = sizeof(sslv2_client_hello),
.allocated = 0,
.growable = 0
};
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &client_hello));
EXPECT_FAILURE_WITH_ERRNO(s2n_client_hello_recv(server_conn), S2N_ERR_BAD_MESSAGE);
s2n_connection_free(server_conn);
};
/* Test that S2N will accept a ClientHello with legacy_session_id set when running with QUIC.
* Since this requirement is a SHOULD, we're accepting it for non-compliant endpoints.
* https://tools.ietf.org/html/draft-ietf-quic-tls-32#section-8.4*/
if (s2n_is_tls13_fully_supported()) {
EXPECT_SUCCESS(s2n_reset_tls13_in_test());
const size_t test_session_id_len = 10;
struct s2n_config *quic_config;
EXPECT_NOT_NULL(quic_config = s2n_config_new());
EXPECT_SUCCESS(s2n_config_enable_quic(quic_config));
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(quic_config, tls13_chain_and_key));
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(quic_config, "default_tls13"));
/* Succeeds without a session id */
{
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, quic_config));
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, quic_config));
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
EXPECT_SUCCESS(s2n_stuffer_copy(&client_conn->handshake.io, &server_conn->handshake.io,
s2n_stuffer_data_available(&client_conn->handshake.io)));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
s2n_connection_free(client_conn);
s2n_connection_free(server_conn);
};
/* Also, succeeds with a session id */
{
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, quic_config));
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, quic_config));
/* Directly set session id, which is not set by default when using QUIC */
client_conn->session_id_len = test_session_id_len;
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
EXPECT_SUCCESS(s2n_stuffer_copy(&client_conn->handshake.io, &server_conn->handshake.io,
s2n_stuffer_data_available(&client_conn->handshake.io)));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
s2n_connection_free(client_conn);
s2n_connection_free(server_conn);
};
s2n_config_free(quic_config);
}
/* Test that the server will not choose a signature algorithm or certificate if using PSKs */
{
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(client_conn, "default_tls13"));
EXPECT_SUCCESS(s2n_connection_set_cipher_preferences(server_conn, "default_tls13"));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls13_config));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls13_config));
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
EXPECT_SUCCESS(s2n_stuffer_copy(&client_conn->handshake.io, &server_conn->handshake.io,
s2n_stuffer_data_available(&client_conn->handshake.io)));
struct s2n_psk chosen_psk = { 0 };
chosen_psk.hmac_alg = S2N_HMAC_SHA256;
server_conn->psk_params.chosen_psk = &chosen_psk;
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
EXPECT_EQUAL(server_conn->handshake_params.server_cert_sig_scheme->iana_value, 0);
EXPECT_NULL(server_conn->handshake_params.our_chain_and_key);
EXPECT_SUCCESS(s2n_connection_free(client_conn));
EXPECT_SUCCESS(s2n_connection_free(server_conn));
};
/* Test that curve selection will be NIST P-256 when tls12 client does not send curve extension.
*
*= https://tools.ietf.org/rfc/rfc4492#section-4
*= type=test
*# A client that proposes ECC cipher suites may choose not to include these extensions.
*# In this case, the server is free to choose any one of the elliptic curves or point formats listed in Section 5.
*/
{
S2N_BLOB_FROM_HEX(tls12_client_hello_no_curves,
/* clang-format off */
"030307de81928fe1" "7cba77904c2798da" "2521a76b013a16e4" "21ade32208f658d4" "327d000048000400"
"05000a0016002f00" "3300350039003c00" "3d0067006b009c00" "9d009e009fc009c0" "0ac011c012c013c0"
"14c023c024c027c0" "28c02bc02cc02fc0" "30cca8cca9ccaaff" "04ff0800ff010000" "30000d0016001404"
"0105010601030104" "0305030603030302" "010203000b000201" "00fe01000c000a00" "17000d0013000100"
"0a" /* clang-format on */);
/* The above code is generated the following code,
disabling s2n_client_supported_groups_extension
from client_hello_extensions (s2n_extension_type_lists.c)
and exporting the resulting client_conn->handshake.io.blob
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, tls12_config));
EXPECT_SUCCESS(s2n_client_hello_send(client_conn));
EXPECT_EQUAL(client_conn->client_protocol_version, S2N_TLS12);
EXPECT_EQUAL(client_conn->client_hello_version, S2N_TLS12);
s2n_connection_free(client_conn);
*/
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, tls13_config));
EXPECT_SUCCESS(s2n_stuffer_write(&server_conn->handshake.io, &tls12_client_hello_no_curves));
EXPECT_SUCCESS(s2n_client_hello_recv(server_conn));
/* ensure negotiated_curve == secp256r1 for maximum client compatibility */
EXPECT_EQUAL(server_conn->kex_params.server_ecc_evp_params.negotiated_curve, &s2n_ecc_curve_secp256r1);
EXPECT_EQUAL(server_conn->server_protocol_version, S2N_TLS13);
EXPECT_EQUAL(server_conn->actual_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_protocol_version, S2N_TLS12);
EXPECT_EQUAL(server_conn->client_hello_version, S2N_TLS12);
s2n_connection_free(server_conn);
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
};
s2n_config_free(tls12_config);
s2n_config_free(tls13_config);
s2n_cert_chain_and_key_free(chain_and_key);
free(cert_chain);
free(private_key);
s2n_cert_chain_and_key_free(tls13_chain_and_key);
free(tls13_cert_chain);
free(tls13_private_key);
END_TEST();
return 0;
}
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