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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 "tls/s2n_config.h"
#include <stdlib.h>
#include "api/s2n.h"
#include "crypto/s2n_fips.h"
#include "crypto/s2n_pq.h"
#include "s2n_test.h"
#include "testlib/s2n_testlib.h"
#include "tls/extensions/s2n_client_supported_groups.h"
#include "tls/s2n_connection.h"
#include "tls/s2n_internal.h"
#include "tls/s2n_record.h"
#include "tls/s2n_security_policies.h"
#include "tls/s2n_tls13.h"
#include "unstable/npn.h"
#define S2N_TEST_MAX_SUPPORTED_GROUPS_COUNT 30
static int s2n_test_select_psk_identity_callback(struct s2n_connection *conn, void *context,
struct s2n_offered_psk_list *psk_identity_list)
{
return S2N_SUCCESS;
}
static int s2n_test_reneg_req_cb(struct s2n_connection *conn, void *context, s2n_renegotiate_response *response)
{
return S2N_SUCCESS;
}
static int s2n_test_crl_lookup_cb(struct s2n_crl_lookup *lookup, void *context)
{
return S2N_SUCCESS;
}
static int s2n_test_cert_validation_cb(struct s2n_connection *conn, struct s2n_cert_validation_info *info, void *context)
{
return S2N_SUCCESS;
}
static int s2n_test_async_pkey_fn(struct s2n_connection *conn, struct s2n_async_pkey_op *op)
{
return S2N_SUCCESS;
}
int main(int argc, char **argv)
{
BEGIN_TEST();
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
const s2n_mode modes[] = { S2N_CLIENT, S2N_SERVER };
const struct s2n_security_policy *default_security_policy, *tls13_security_policy, *fips_security_policy;
EXPECT_SUCCESS(s2n_find_security_policy_from_version("default_tls13", &tls13_security_policy));
EXPECT_SUCCESS(s2n_find_security_policy_from_version("default_fips", &fips_security_policy));
EXPECT_SUCCESS(s2n_find_security_policy_from_version("default", &default_security_policy));
char cert[S2N_MAX_TEST_PEM_SIZE] = { 0 };
EXPECT_SUCCESS(s2n_read_test_pem(S2N_DEFAULT_TEST_CERT_CHAIN, cert, S2N_MAX_TEST_PEM_SIZE));
char key[S2N_MAX_TEST_PEM_SIZE] = { 0 };
EXPECT_SUCCESS(s2n_read_test_pem(S2N_DEFAULT_TEST_PRIVATE_KEY, key, S2N_MAX_TEST_PEM_SIZE));
/* Test: s2n_config_new and tls13_default_config match */
{
struct s2n_config *config, *default_config;
EXPECT_NOT_NULL(config = s2n_config_new());
EXPECT_NOT_NULL(default_config = s2n_fetch_default_config());
/* s2n_config_new() matches s2n_fetch_default_config() */
EXPECT_EQUAL(default_config->security_policy, config->security_policy);
EXPECT_EQUAL(default_config->security_policy->signature_preferences, config->security_policy->signature_preferences);
EXPECT_EQUAL(default_config->client_cert_auth_type, config->client_cert_auth_type);
/* Calling s2n_fetch_default_config() repeatedly returns the same object */
EXPECT_EQUAL(default_config, s2n_fetch_default_config());
/* TLS1.3 default does not match non-TLS1.3 default */
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
EXPECT_NOT_EQUAL(default_config, s2n_fetch_default_config());
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
EXPECT_SUCCESS(s2n_config_free(config));
};
/* Connections created with default configs */
{
/* For TLS1.2 */
if (!s2n_is_in_fips_mode()) {
struct s2n_connection *conn;
const struct s2n_security_policy *security_policy;
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_CLIENT));
EXPECT_EQUAL(conn->config, s2n_fetch_default_config());
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, default_security_policy);
EXPECT_SUCCESS(s2n_connection_free(conn));
}
/* For TLS1.3 */
{
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
struct s2n_connection *conn;
const struct s2n_security_policy *security_policy;
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_CLIENT));
EXPECT_EQUAL(conn->config, s2n_fetch_default_config());
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, tls13_security_policy);
EXPECT_SUCCESS(s2n_connection_free(conn));
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
};
/* For fips */
if (s2n_is_in_fips_mode()) {
struct s2n_connection *conn;
const struct s2n_security_policy *security_policy;
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_CLIENT));
EXPECT_EQUAL(conn->config, s2n_fetch_default_config());
EXPECT_SUCCESS(s2n_connection_get_security_policy(conn, &security_policy));
EXPECT_EQUAL(security_policy, fips_security_policy);
EXPECT_SUCCESS(s2n_connection_free(conn));
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
}
};
/* Test for s2n_config_new() and tls 1.3 behavior */
{
if (!s2n_is_in_fips_mode()) {
struct s2n_config *config;
EXPECT_NOT_NULL(config = s2n_config_new());
EXPECT_EQUAL(config->security_policy, default_security_policy);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_20170210);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20140601);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20140601);
EXPECT_SUCCESS(s2n_config_free(config));
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
EXPECT_NOT_NULL(config = s2n_config_new());
EXPECT_EQUAL(config->security_policy, tls13_security_policy);
EXPECT_EQUAL(config->security_policy->cipher_preferences, &cipher_preferences_20210831);
EXPECT_EQUAL(config->security_policy->kem_preferences, &kem_preferences_null);
EXPECT_EQUAL(config->security_policy->signature_preferences, &s2n_signature_preferences_20200207);
EXPECT_EQUAL(config->security_policy->ecc_preferences, &s2n_ecc_preferences_20200310);
EXPECT_SUCCESS(s2n_config_free(config));
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
}
};
/* Test setting the callback to select PSK identity */
{
struct s2n_config *config = NULL;
EXPECT_NOT_NULL(config = s2n_config_new());
uint8_t context = 13;
/* Safety check */
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_psk_selection_callback(
NULL, s2n_test_select_psk_identity_callback, &context),
S2N_ERR_NULL);
EXPECT_NULL(config->psk_selection_cb);
EXPECT_NULL(config->psk_selection_ctx);
EXPECT_SUCCESS(s2n_config_set_psk_selection_callback(config, s2n_test_select_psk_identity_callback, &context));
EXPECT_EQUAL(config->psk_selection_cb, s2n_test_select_psk_identity_callback);
EXPECT_EQUAL(config->psk_selection_ctx, &context);
EXPECT_SUCCESS(s2n_config_set_psk_selection_callback(config, NULL, NULL));
EXPECT_NULL(config->psk_selection_cb);
EXPECT_NULL(config->psk_selection_ctx);
EXPECT_SUCCESS(s2n_config_free(config));
};
/*Test s2n_connection_set_config */
{
/* Test that tickets_to_send is set correctly */
{
struct s2n_connection *conn = NULL;
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_SERVER));
struct s2n_config *config;
uint8_t num_tickets = 1;
EXPECT_NOT_NULL(config = s2n_config_new());
config->initial_tickets_to_send = num_tickets;
EXPECT_EQUAL(conn->tickets_to_send, 0);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_EQUAL(conn->tickets_to_send, num_tickets);
EXPECT_SUCCESS(s2n_config_free(config));
EXPECT_SUCCESS(s2n_connection_free(conn));
};
/* Test that PSK type is set correctly */
{
struct s2n_config *config = s2n_config_new();
EXPECT_NOT_NULL(config);
struct s2n_connection *conn = s2n_connection_new(S2N_SERVER);
EXPECT_NOT_NULL(conn);
EXPECT_EQUAL(config->psk_mode, S2N_PSK_MODE_RESUMPTION);
/* Overrides connection value */
{
conn->config = NULL;
conn->psk_params.type = S2N_PSK_TYPE_EXTERNAL;
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_EQUAL(conn->psk_params.type, S2N_PSK_TYPE_RESUMPTION);
EXPECT_FALSE(conn->psk_mode_overridden);
};
/* Does not override connection value if conn->override_psk_mode set */
{
conn->config = NULL;
conn->psk_params.type = S2N_PSK_TYPE_EXTERNAL;
conn->psk_mode_overridden = true;
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_EQUAL(conn->psk_params.type, S2N_PSK_TYPE_EXTERNAL);
EXPECT_TRUE(conn->psk_mode_overridden);
conn->psk_mode_overridden = false;
};
/* Does not override connection value if PSKs already set */
{
conn->config = NULL;
DEFER_CLEANUP(struct s2n_psk *test_external_psk = s2n_test_psk_new(conn), s2n_psk_free);
EXPECT_SUCCESS(s2n_connection_append_psk(conn, test_external_psk));
EXPECT_EQUAL(conn->psk_params.type, S2N_PSK_TYPE_EXTERNAL);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_EQUAL(conn->psk_params.type, S2N_PSK_TYPE_EXTERNAL);
EXPECT_FALSE(conn->psk_mode_overridden);
};
EXPECT_SUCCESS(s2n_connection_free(conn));
EXPECT_SUCCESS(s2n_config_free(config));
};
};
/* s2n_config_set_session_tickets_onoff */
{
/* Safety */
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_session_tickets_onoff(NULL, true), S2N_ERR_NULL);
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_session_tickets_onoff(NULL, false), S2N_ERR_NULL);
struct s2n_config *config = s2n_config_new();
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_set_session_tickets_onoff(config, true));
EXPECT_TRUE(config->use_tickets);
EXPECT_EQUAL(config->initial_tickets_to_send, 1);
EXPECT_SUCCESS(s2n_config_set_session_tickets_onoff(config, false));
EXPECT_FALSE(config->use_tickets);
EXPECT_EQUAL(config->initial_tickets_to_send, 1);
config->initial_tickets_to_send = 10;
EXPECT_SUCCESS(s2n_config_set_session_tickets_onoff(config, true));
EXPECT_TRUE(config->use_tickets);
EXPECT_EQUAL(config->initial_tickets_to_send, 10);
EXPECT_SUCCESS(s2n_config_free(config));
};
/* s2n_config_set_context */
/* s2n_config_get_context */
{
uint8_t context = 42;
uint8_t other = 123;
void *returned_context = NULL;
struct s2n_config *config = s2n_config_new();
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_get_ctx(config, &returned_context));
EXPECT_NULL(returned_context);
EXPECT_SUCCESS(s2n_config_set_ctx(config, &context));
EXPECT_SUCCESS(s2n_config_get_ctx(config, &returned_context));
EXPECT_NOT_NULL(returned_context);
EXPECT_EQUAL(*((uint8_t *) returned_context), context);
EXPECT_NOT_EQUAL(*((uint8_t *) returned_context), other);
EXPECT_SUCCESS(s2n_config_free(config));
};
/* Test s2n_config_set_extension_data */
{
uint8_t extension_data[] = "extension data";
/* Test s2n_config_set_extension_data can be called for owned cert chains */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key(config, cert, key));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_SUCCESS(s2n_config_set_extension_data(config, S2N_EXTENSION_OCSP_STAPLING,
extension_data, sizeof(extension_data)));
EXPECT_EQUAL(s2n_config_get_single_default_cert(config)->ocsp_status.size, sizeof(extension_data));
};
/* Test s2n_config_set_extension_data can't be called for unowned cert chains */
{
DEFER_CLEANUP(struct s2n_cert_chain_and_key *chain = NULL,
s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain,
S2N_DEFAULT_TEST_CERT_CHAIN, S2N_DEFAULT_TEST_PRIVATE_KEY));
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(config, chain));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_extension_data(config, S2N_EXTENSION_OCSP_STAPLING,
extension_data, sizeof(extension_data)),
S2N_ERR_CERT_OWNERSHIP);
EXPECT_EQUAL(s2n_config_get_single_default_cert(config)->ocsp_status.size, 0);
EXPECT_EQUAL(chain->ocsp_status.size, 0);
};
};
/* Test s2n_config_free_cert_chain_and_key */
{
/* Chain owned by application */
{
DEFER_CLEANUP(struct s2n_cert_chain_and_key *chain = NULL, s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain,
S2N_DEFAULT_TEST_CERT_CHAIN, S2N_DEFAULT_TEST_PRIVATE_KEY));
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(config, chain));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_EQUAL(config->cert_ownership, S2N_APP_OWNED);
/* No-op for application-owned chains */
EXPECT_SUCCESS(s2n_config_free_cert_chain_and_key(config));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_EQUAL(config->cert_ownership, S2N_APP_OWNED);
/* Still no-op if called again */
EXPECT_SUCCESS(s2n_config_free_cert_chain_and_key(config));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
};
/* Chain owned by application and freed too early:
* This is arguably incorrect behavior, but did not cause errors in the past.
* We should continue to ensure it doesn't cause any errors.
*/
{
struct s2n_cert_chain_and_key *chain = NULL;
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain,
S2N_DEFAULT_TEST_CERT_CHAIN, S2N_DEFAULT_TEST_PRIVATE_KEY));
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(config, chain));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_EQUAL(config->cert_ownership, S2N_APP_OWNED);
/* Free the chain early */
EXPECT_SUCCESS(s2n_cert_chain_and_key_free(chain));
/* No-op for application-owned chains */
EXPECT_SUCCESS(s2n_config_free_cert_chain_and_key(config));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_EQUAL(config->cert_ownership, S2N_APP_OWNED);
/* No-op if called again */
EXPECT_SUCCESS(s2n_config_free_cert_chain_and_key(config));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
};
/* Chain owned by library */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key(config, cert, key));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_EQUAL(config->cert_ownership, S2N_LIB_OWNED);
EXPECT_SUCCESS(s2n_config_free_cert_chain_and_key(config));
EXPECT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_EQUAL(config->cert_ownership, S2N_NOT_OWNED);
/* No-op if called again */
EXPECT_SUCCESS(s2n_config_free_cert_chain_and_key(config));
EXPECT_NULL(s2n_config_get_single_default_cert(config));
};
/* Switch from library-owned certs to application-owned certs */
{
DEFER_CLEANUP(struct s2n_cert_chain_and_key *chain = NULL, s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain,
S2N_DEFAULT_TEST_CERT_CHAIN, S2N_DEFAULT_TEST_PRIVATE_KEY));
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key(config, cert, key));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_EQUAL(config->cert_ownership, S2N_LIB_OWNED);
EXPECT_SUCCESS(s2n_config_free_cert_chain_and_key(config));
EXPECT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_EQUAL(config->cert_ownership, S2N_NOT_OWNED);
/* Now add an application-owned chain */
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(config, chain));
EXPECT_SUCCESS(s2n_config_free_cert_chain_and_key(config));
};
};
/* Test s2n_config_set_cert_chain_and_key_defaults */
{
/* Succeeds if chains owned by app */
{
DEFER_CLEANUP(struct s2n_cert_chain_and_key *chain_1 = NULL, s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain_1,
S2N_DEFAULT_TEST_CERT_CHAIN, S2N_DEFAULT_TEST_PRIVATE_KEY));
DEFER_CLEANUP(struct s2n_cert_chain_and_key *chain_2 = NULL, s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain_2,
S2N_DEFAULT_TEST_CERT_CHAIN, S2N_DEFAULT_TEST_PRIVATE_KEY));
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(config, chain_1));
EXPECT_EQUAL(s2n_config_get_single_default_cert(config), chain_1);
EXPECT_EQUAL(config->cert_ownership, S2N_APP_OWNED);
EXPECT_SUCCESS(s2n_config_set_cert_chain_and_key_defaults(config, &chain_2, 1));
EXPECT_EQUAL(s2n_config_get_single_default_cert(config), chain_2);
EXPECT_EQUAL(config->cert_ownership, S2N_APP_OWNED);
};
/* Fails if chains owned by library */
{
DEFER_CLEANUP(struct s2n_cert_chain_and_key *chain = NULL, s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain,
S2N_DEFAULT_TEST_CERT_CHAIN, S2N_DEFAULT_TEST_PRIVATE_KEY));
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key(config, cert, key));
EXPECT_NOT_NULL(s2n_config_get_single_default_cert(config));
EXPECT_EQUAL(config->cert_ownership, S2N_LIB_OWNED);
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_cert_chain_and_key_defaults(
config, &chain, 1),
S2N_ERR_CERT_OWNERSHIP);
};
};
/* Test s2n_config_set_send_buffer_size */
{
/* Safety */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_EQUAL(config->send_buffer_size_override, 0);
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_send_buffer_size(NULL, S2N_MIN_SEND_BUFFER_SIZE), S2N_ERR_NULL);
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_send_buffer_size(config, 0), S2N_ERR_INVALID_ARGUMENT);
EXPECT_EQUAL(config->send_buffer_size_override, 0);
};
/* Default applied to connection */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
DEFER_CLEANUP(struct s2n_connection *conn = s2n_connection_new(S2N_SERVER), s2n_connection_ptr_free);
EXPECT_NOT_NULL(conn);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_EQUAL(config->send_buffer_size_override, 0);
EXPECT_FALSE(conn->multirecord_send);
};
/* Custom applied to connection */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_set_send_buffer_size(config, S2N_MIN_SEND_BUFFER_SIZE));
DEFER_CLEANUP(struct s2n_connection *conn = s2n_connection_new(S2N_SERVER), s2n_connection_ptr_free);
EXPECT_NOT_NULL(conn);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_EQUAL(config->send_buffer_size_override, S2N_MIN_SEND_BUFFER_SIZE);
EXPECT_TRUE(conn->multirecord_send);
};
};
/* Test s2n_config_set_verify_after_sign */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_FALSE(config->verify_after_sign);
/* Safety */
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_verify_after_sign(NULL, S2N_VERIFY_AFTER_SIGN_ENABLED), S2N_ERR_NULL);
/* Invalid mode */
config->verify_after_sign = true;
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_verify_after_sign(config, UINT8_MAX), S2N_ERR_INVALID_ARGUMENT);
EXPECT_TRUE(config->verify_after_sign);
config->verify_after_sign = false;
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_verify_after_sign(config, UINT8_MAX), S2N_ERR_INVALID_ARGUMENT);
EXPECT_FALSE(config->verify_after_sign);
/* Set and unset */
EXPECT_SUCCESS(s2n_config_set_verify_after_sign(config, S2N_VERIFY_AFTER_SIGN_ENABLED));
EXPECT_TRUE(config->verify_after_sign);
EXPECT_SUCCESS(s2n_config_set_verify_after_sign(config, S2N_VERIFY_AFTER_SIGN_DISABLED));
EXPECT_FALSE(config->verify_after_sign);
};
/* Test s2n_config_set_renegotiate_request_cb */
{
uint8_t context = 0;
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
/* Unset by default */
EXPECT_EQUAL(config->renegotiate_request_cb, NULL);
EXPECT_EQUAL(config->renegotiate_request_ctx, NULL);
/* Safety */
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_renegotiate_request_cb(NULL, s2n_test_reneg_req_cb, &context), S2N_ERR_NULL);
EXPECT_SUCCESS(s2n_config_set_renegotiate_request_cb(config, NULL, &context));
EXPECT_SUCCESS(s2n_config_set_renegotiate_request_cb(config, s2n_test_reneg_req_cb, NULL));
/* Set */
EXPECT_SUCCESS(s2n_config_set_renegotiate_request_cb(config, s2n_test_reneg_req_cb, &context));
EXPECT_EQUAL(config->renegotiate_request_cb, s2n_test_reneg_req_cb);
EXPECT_EQUAL(config->renegotiate_request_ctx, &context);
/* Unset */
EXPECT_SUCCESS(s2n_config_set_renegotiate_request_cb(config, NULL, NULL));
EXPECT_EQUAL(config->renegotiate_request_cb, NULL);
EXPECT_EQUAL(config->renegotiate_request_ctx, NULL);
};
/* Test s2n_config_set_npn */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_FALSE(config->npn_supported);
/* Safety */
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_npn(NULL, true), S2N_ERR_NULL);
/* Set and unset */
EXPECT_SUCCESS(s2n_config_set_npn(config, true));
EXPECT_TRUE(config->npn_supported);
EXPECT_SUCCESS(s2n_config_set_npn(config, false));
EXPECT_FALSE(config->npn_supported);
};
/* Test s2n_config_set_crl_lookup_cb */
{
uint8_t context = 0;
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
/* Unset by default */
EXPECT_EQUAL(config->crl_lookup_cb, NULL);
EXPECT_EQUAL(config->crl_lookup_ctx, NULL);
/* Safety */
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_crl_lookup_cb(NULL, s2n_test_crl_lookup_cb, &context), S2N_ERR_NULL);
EXPECT_SUCCESS(s2n_config_set_crl_lookup_cb(config, NULL, &context));
EXPECT_SUCCESS(s2n_config_set_crl_lookup_cb(config, s2n_test_crl_lookup_cb, NULL));
/* Set */
EXPECT_SUCCESS(s2n_config_set_crl_lookup_cb(config, s2n_test_crl_lookup_cb, &context));
EXPECT_EQUAL(config->crl_lookup_cb, s2n_test_crl_lookup_cb);
EXPECT_EQUAL(config->crl_lookup_ctx, &context);
/* Unset */
EXPECT_SUCCESS(s2n_config_set_crl_lookup_cb(config, NULL, NULL));
EXPECT_EQUAL(config->crl_lookup_cb, NULL);
EXPECT_EQUAL(config->crl_lookup_ctx, NULL);
};
/* Test s2n_config_set_cert_validation_cb */
{
uint8_t context = 0;
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
/* Unset by default */
EXPECT_EQUAL(config->cert_validation_cb, NULL);
EXPECT_EQUAL(config->cert_validation_ctx, NULL);
/* Safety */
EXPECT_FAILURE_WITH_ERRNO(s2n_config_set_cert_validation_cb(NULL, s2n_test_cert_validation_cb, &context),
S2N_ERR_NULL);
EXPECT_SUCCESS(s2n_config_set_cert_validation_cb(config, NULL, &context));
EXPECT_SUCCESS(s2n_config_set_cert_validation_cb(config, s2n_test_cert_validation_cb, NULL));
/* Set */
EXPECT_SUCCESS(s2n_config_set_cert_validation_cb(config, s2n_test_cert_validation_cb, &context));
EXPECT_EQUAL(config->cert_validation_cb, s2n_test_cert_validation_cb);
EXPECT_EQUAL(config->cert_validation_ctx, &context);
/* Unset */
EXPECT_SUCCESS(s2n_config_set_cert_validation_cb(config, NULL, NULL));
EXPECT_EQUAL(config->cert_validation_cb, NULL);
EXPECT_EQUAL(config->cert_validation_ctx, NULL);
};
/* Test s2n_config_set_status_request_type */
for (size_t mode_i = 0; mode_i < s2n_array_len(modes); mode_i++) {
s2n_mode mode = modes[mode_i];
if (!s2n_x509_ocsp_stapling_supported()) {
break;
}
/* request_ocsp_status should be false by default */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_FALSE(config->ocsp_status_requested_by_user);
EXPECT_FALSE(config->ocsp_status_requested_by_s2n);
DEFER_CLEANUP(struct s2n_connection *conn = s2n_connection_new(mode), s2n_connection_ptr_free);
EXPECT_NOT_NULL(conn);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_FALSE(conn->request_ocsp_status);
};
/* request_ocsp_status should be true if set via s2n_config_set_status_request_type */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_set_status_request_type(config, S2N_STATUS_REQUEST_OCSP));
EXPECT_TRUE(config->ocsp_status_requested_by_user);
EXPECT_FALSE(config->ocsp_status_requested_by_s2n);
DEFER_CLEANUP(struct s2n_connection *conn = s2n_connection_new(mode), s2n_connection_ptr_free);
EXPECT_NOT_NULL(conn);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_TRUE(conn->request_ocsp_status);
};
/* ocsp_status_requested_by_s2n can be set in s2n_config_set_verification_ca_location. For
* backwards compatibility, this should tell clients to request OCSP stapling. However, this
* API should not tell servers to request OCSP stapling.
*/
for (int api_configuration_i = 0; api_configuration_i < 3; api_configuration_i++) {
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
switch (api_configuration_i) {
case 0:
EXPECT_SUCCESS(s2n_config_set_verification_ca_location(config, S2N_DEFAULT_TEST_CERT_CHAIN, NULL));
break;
case 1:
/* If a user intentionally disables OCSP stapling, s2n_config_set_verification_ca_location
* should not re-enable it for servers.
*/
EXPECT_SUCCESS(s2n_config_set_status_request_type(config, S2N_STATUS_REQUEST_NONE));
EXPECT_SUCCESS(s2n_config_set_verification_ca_location(config, S2N_DEFAULT_TEST_CERT_CHAIN, NULL));
break;
default:
EXPECT_SUCCESS(s2n_config_set_status_request_type(config, S2N_STATUS_REQUEST_OCSP));
EXPECT_SUCCESS(s2n_config_set_status_request_type(config, S2N_STATUS_REQUEST_NONE));
EXPECT_SUCCESS(s2n_config_set_verification_ca_location(config, S2N_DEFAULT_TEST_CERT_CHAIN, NULL));
break;
}
DEFER_CLEANUP(struct s2n_connection *conn = s2n_connection_new(mode), s2n_connection_ptr_free);
EXPECT_NOT_NULL(conn);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
if (mode == S2N_CLIENT) {
EXPECT_TRUE(conn->request_ocsp_status);
} else {
EXPECT_FALSE(conn->request_ocsp_status);
}
};
/* Calling s2n_config_set_status_request_type with S2N_STATUS_REQUEST_OCSP should enable OCSP
* status requests, regardless of s2n_config_set_verification_ca_location.
*/
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_set_status_request_type(config, S2N_STATUS_REQUEST_OCSP));
EXPECT_SUCCESS(s2n_config_set_verification_ca_location(config, S2N_DEFAULT_TEST_CERT_CHAIN, NULL));
DEFER_CLEANUP(struct s2n_connection *conn = s2n_connection_new(mode), s2n_connection_ptr_free);
EXPECT_NOT_NULL(conn);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_TRUE(conn->request_ocsp_status);
};
/* Calling s2n_config_set_status_request_type with S2N_STATUS_REQUEST_NONE should disable OCSP
* status requests, regardless of s2n_config_set_verification_ca_location.
*/
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_set_verification_ca_location(config, S2N_DEFAULT_TEST_CERT_CHAIN, NULL));
EXPECT_SUCCESS(s2n_config_set_status_request_type(config, S2N_STATUS_REQUEST_NONE));
DEFER_CLEANUP(struct s2n_connection *conn = s2n_connection_new(mode), s2n_connection_ptr_free);
EXPECT_NOT_NULL(conn);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_FALSE(conn->request_ocsp_status);
};
};
/* Test s2n_config_add_cert_chain */
{
uint32_t pem_len = 0;
uint8_t pem_bytes[S2N_MAX_TEST_PEM_SIZE] = { 0 };
EXPECT_SUCCESS(s2n_read_test_pem_and_len(S2N_DEFAULT_ECDSA_TEST_CERT_CHAIN,
pem_bytes, &pem_len, sizeof(pem_bytes)));
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_SUCCESS(s2n_config_add_cert_chain(config, pem_bytes, pem_len));
EXPECT_TRUE(config->no_signing_key);
EXPECT_EQUAL(config->cert_ownership, S2N_LIB_OWNED);
struct s2n_cert_chain_and_key *chain = s2n_config_get_single_default_cert(config);
POSIX_ENSURE_REF(chain);
EXPECT_FAILURE(s2n_pkey_check_key_exists(chain->private_key));
DEFER_CLEANUP(struct s2n_connection *conn = s2n_connection_new(S2N_CLIENT),
s2n_connection_ptr_free);
EXPECT_FAILURE_WITH_ERRNO(s2n_connection_set_config(conn, config), S2N_ERR_NO_PRIVATE_KEY);
EXPECT_SUCCESS(s2n_config_set_async_pkey_callback(config, s2n_test_async_pkey_fn));
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
};
/* Test loading system certs */
{
/* s2n_config_load_system_certs safety */
{
EXPECT_FAILURE_WITH_ERRNO(s2n_config_load_system_certs(NULL), S2N_ERR_NULL);
}
/* s2n_config_new_minimal should not load system certs */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new_minimal(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_NULL(config->trust_store.trust_store);
EXPECT_FALSE(config->trust_store.loaded_system_certs);
/* System certs can be loaded onto the minimal config */
EXPECT_SUCCESS(s2n_config_load_system_certs(config));
EXPECT_NOT_NULL(config->trust_store.trust_store);
EXPECT_TRUE(config->trust_store.loaded_system_certs);
/* Attempting to load system certs multiple times on the same config should error */
for (int i = 0; i < 20; i++) {
EXPECT_FAILURE_WITH_ERRNO(s2n_config_load_system_certs(config), S2N_ERR_X509_TRUST_STORE);
EXPECT_TRUE(config->trust_store.loaded_system_certs);
}
}
/* s2n_config_new should load system certs */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_NOT_NULL(config->trust_store.trust_store);
EXPECT_TRUE(config->trust_store.loaded_system_certs);
/* Attempting to load system certs multiple times on the same config should error */
for (int i = 0; i < 20; i++) {
EXPECT_FAILURE_WITH_ERRNO(s2n_config_load_system_certs(config), S2N_ERR_X509_TRUST_STORE);
EXPECT_TRUE(config->trust_store.loaded_system_certs);
}
}
/* The default config should load system certs */
{
struct s2n_config *config = s2n_fetch_default_config();
EXPECT_NOT_NULL(config);
EXPECT_TRUE(config->trust_store.loaded_system_certs);
}
/* System certs can be loaded again after wiping the trust store */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
for (int i = 0; i < 20; i++) {
/* System certs were already loaded, so an attempt to load them should fail */
EXPECT_NOT_NULL(config->trust_store.trust_store);
EXPECT_TRUE(config->trust_store.loaded_system_certs);
EXPECT_FAILURE_WITH_ERRNO(s2n_config_load_system_certs(config), S2N_ERR_X509_TRUST_STORE);
EXPECT_SUCCESS(s2n_config_wipe_trust_store(config));
/* The trust store is cleared after a wipe, so it should be possible to load system certs again */
EXPECT_FALSE(config->trust_store.loaded_system_certs);
EXPECT_SUCCESS(s2n_config_load_system_certs(config));
EXPECT_TRUE(config->trust_store.loaded_system_certs);
}
}
/* Ensure that system certs are properly loaded into the X509_STORE.
*
* The API used to retrieve the contents of an X509_STORE, X509_STORE_get0_objects,
* wasn't added until OpenSSL 1.1.0.
*/
#if S2N_OPENSSL_VERSION_AT_LEAST(1, 1, 0)
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new_minimal(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_NULL(config->trust_store.trust_store);
EXPECT_FALSE(config->trust_store.loaded_system_certs);
/* Initialize the X509_STORE by adding a cert */
EXPECT_SUCCESS(s2n_x509_trust_store_from_ca_file(&config->trust_store, S2N_RSA_PSS_2048_SHA256_CA_CERT, NULL));
EXPECT_NOT_NULL(config->trust_store.trust_store);
EXPECT_FALSE(config->trust_store.loaded_system_certs);
/* The X509_STORE should only contain the single cert that was added. */
STACK_OF(X509_OBJECT) *x509_store_contents = X509_STORE_get0_objects(config->trust_store.trust_store);
EXPECT_NOT_NULL(x509_store_contents);
int initial_contents_count = sk_X509_OBJECT_num(x509_store_contents);
EXPECT_EQUAL(initial_contents_count, 1);
/* Override the system cert file to guarantee that a system cert will be loaded */
EXPECT_SUCCESS(setenv("SSL_CERT_FILE", S2N_SHA1_ROOT_SIGNATURE_CA_CERT, 1));
/* Load the system cert into the store */
EXPECT_SUCCESS(s2n_config_load_system_certs(config));
EXPECT_TRUE(config->trust_store.loaded_system_certs);
int system_certs_contents_count = sk_X509_OBJECT_num(x509_store_contents);
/* LibreSSL doesn't use the SSL_CERT_FILE environment variable to set the system cert location,
* so we don't know how many system certs will be loaded, if any.
*/
if (!s2n_libcrypto_is_libressl()) {
EXPECT_EQUAL(system_certs_contents_count, initial_contents_count + 1);
}
/* Additional calls to s2n_config_load_default_certs should not add additional certs to the store */
for (int i = 0; i < 20; i++) {
EXPECT_FAILURE_WITH_ERRNO(s2n_config_load_system_certs(config), S2N_ERR_X509_TRUST_STORE);
EXPECT_TRUE(config->trust_store.loaded_system_certs);
int additional_call_contents_count = sk_X509_OBJECT_num(x509_store_contents);
EXPECT_TRUE(additional_call_contents_count == system_certs_contents_count);
}
EXPECT_SUCCESS(unsetenv("SSL_CERT_FILE"));
}
#endif
/* Self-talk tests */
{
DEFER_CLEANUP(struct s2n_cert_chain_and_key *chain_and_key = NULL,
s2n_cert_chain_and_key_ptr_free);
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain_and_key,
S2N_DEFAULT_TEST_CERT_CHAIN, S2N_DEFAULT_TEST_PRIVATE_KEY));
/* Ensure a handshake succeeds with a minimal server config and no mutual auth */
{
DEFER_CLEANUP(struct s2n_config *server_config = s2n_config_new_minimal(), s2n_config_ptr_free);
EXPECT_NOT_NULL(server_config);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(server_config, "default"));
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(server_config, chain_and_key));
DEFER_CLEANUP(struct s2n_connection *server_conn = s2n_connection_new(S2N_SERVER),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(server_conn);
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, server_config));
DEFER_CLEANUP(struct s2n_config *client_config = s2n_config_new_minimal(), s2n_config_ptr_free);
EXPECT_NOT_NULL(client_config);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(client_config, "default"));
EXPECT_SUCCESS(s2n_config_set_verification_ca_location(client_config, S2N_DEFAULT_TEST_CERT_CHAIN, NULL));
DEFER_CLEANUP(struct s2n_connection *client_conn = s2n_connection_new(S2N_CLIENT),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(client_conn);
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, client_config));
EXPECT_SUCCESS(s2n_set_server_name(client_conn, "s2nTestServer"));
struct s2n_test_io_pair io_pair = { 0 };
EXPECT_SUCCESS(s2n_io_pair_init_non_blocking(&io_pair));
EXPECT_SUCCESS(s2n_connections_set_io_pair(client_conn, server_conn, &io_pair));
EXPECT_FALSE(server_config->trust_store.loaded_system_certs);
EXPECT_NULL(server_config->trust_store.trust_store);
EXPECT_FALSE(client_config->trust_store.loaded_system_certs);
EXPECT_NOT_NULL(client_config->trust_store.trust_store);
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
}
/* Ensure a handshake fails gracefully with an uninitialized trust store */
{
DEFER_CLEANUP(struct s2n_config *server_config = s2n_config_new_minimal(), s2n_config_ptr_free);
EXPECT_NOT_NULL(server_config);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(server_config, "default"));
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(server_config, chain_and_key));
DEFER_CLEANUP(struct s2n_connection *server_conn = s2n_connection_new(S2N_SERVER),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(server_conn);
EXPECT_SUCCESS(s2n_connection_set_config(server_conn, server_config));
DEFER_CLEANUP(struct s2n_config *client_config = s2n_config_new_minimal(), s2n_config_ptr_free);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(client_config, "default"));
EXPECT_NOT_NULL(client_config);
DEFER_CLEANUP(struct s2n_connection *client_conn = s2n_connection_new(S2N_CLIENT),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(client_conn);
EXPECT_SUCCESS(s2n_connection_set_config(client_conn, client_config));
EXPECT_SUCCESS(s2n_connection_set_blinding(client_conn, S2N_SELF_SERVICE_BLINDING));
struct s2n_test_io_pair io_pair = { 0 };
EXPECT_SUCCESS(s2n_io_pair_init_non_blocking(&io_pair));
EXPECT_SUCCESS(s2n_connections_set_io_pair(client_conn, server_conn, &io_pair));
EXPECT_FALSE(server_config->trust_store.loaded_system_certs);
EXPECT_NULL(server_config->trust_store.trust_store);
EXPECT_FALSE(client_config->trust_store.loaded_system_certs);
EXPECT_NULL(client_config->trust_store.trust_store);
/* The client should fail to validate the server's certificate without an initialized trust store */
EXPECT_FAILURE_WITH_ERRNO(s2n_negotiate_test_server_and_client(server_conn, client_conn),
S2N_ERR_CERT_UNTRUSTED);
}
}
}
/* s2n_config_disable_x509_time_verification tests */
{
/* Safety */
EXPECT_FAILURE_WITH_ERRNO(s2n_config_disable_x509_time_verification(NULL), S2N_ERR_NULL);
/* Ensure s2n_config_disable_x509_time_verification sets the proper state */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_EQUAL(config->disable_x509_time_validation, false);
EXPECT_SUCCESS(s2n_config_disable_x509_time_verification(config));
EXPECT_EQUAL(config->disable_x509_time_validation, true);
}
}
/* Test s2n_config_get_supported_groups */
{
/* Safety */
{
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
uint16_t supported_groups[S2N_TEST_MAX_SUPPORTED_GROUPS_COUNT] = { 0 };
uint16_t supported_groups_count = 0;
int ret = s2n_config_get_supported_groups(NULL, supported_groups, s2n_array_len(supported_groups),
&supported_groups_count);
EXPECT_FAILURE_WITH_ERRNO(ret, S2N_ERR_NULL);
EXPECT_EQUAL(supported_groups_count, 0);
ret = s2n_config_get_supported_groups(config, NULL, s2n_array_len(supported_groups), &supported_groups_count);
EXPECT_FAILURE_WITH_ERRNO(ret, S2N_ERR_NULL);
EXPECT_EQUAL(supported_groups_count, 0);
ret = s2n_config_get_supported_groups(config, supported_groups, s2n_array_len(supported_groups), NULL);
EXPECT_FAILURE_WITH_ERRNO(ret, S2N_ERR_NULL);
EXPECT_EQUAL(supported_groups_count, 0);
}
/* Error if the provided supported groups array is too small */
{
/* Test a policy with and without PQ kem groups */
const char *policies[] = {
"20170210",
"PQ-TLS-1-2-2023-10-07",
};
for (size_t i = 0; i < s2n_array_len(policies); i++) {
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, policies[i]));
uint32_t policy_groups_count = 0;
EXPECT_OK(s2n_kem_preferences_groups_available(config->security_policy->kem_preferences,
&policy_groups_count));
policy_groups_count += config->security_policy->ecc_preferences->count;
EXPECT_TRUE(policy_groups_count > 0);
uint16_t supported_groups[S2N_TEST_MAX_SUPPORTED_GROUPS_COUNT] = { 0 };
uint16_t supported_groups_count = 11;
for (size_t invalid_count = 0; invalid_count < policy_groups_count; invalid_count++) {
int ret = s2n_config_get_supported_groups(config, supported_groups, invalid_count,
&supported_groups_count);
EXPECT_FAILURE_WITH_ERRNO(ret, S2N_ERR_INSUFFICIENT_MEM_SIZE);
EXPECT_EQUAL(supported_groups_count, 0);
}
EXPECT_SUCCESS(s2n_config_get_supported_groups(config, supported_groups, policy_groups_count,
&supported_groups_count));
EXPECT_EQUAL(supported_groups_count, policy_groups_count);
}
}
/* The groups produced by s2n_config_get_supported_groups should match the groups produced
* by a connection that's configured to send its entire list of supported groups
*/
for (size_t policy_idx = 0; security_policy_selection[policy_idx].version != NULL; policy_idx++) {
const struct s2n_security_policy *security_policy = security_policy_selection[policy_idx].security_policy;
EXPECT_NOT_NULL(security_policy);
uint32_t expected_groups_count = 0;
EXPECT_OK(s2n_kem_preferences_groups_available(security_policy->kem_preferences, &expected_groups_count));
expected_groups_count += security_policy->ecc_preferences->count;
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
config->security_policy = security_policy;
uint16_t supported_groups[S2N_TEST_MAX_SUPPORTED_GROUPS_COUNT] = { 0 };
uint16_t supported_groups_count = 0;
EXPECT_SUCCESS(s2n_config_get_supported_groups(config, supported_groups, s2n_array_len(supported_groups),
&supported_groups_count));
EXPECT_EQUAL(supported_groups_count, expected_groups_count);
DEFER_CLEANUP(struct s2n_connection *conn = s2n_connection_new(S2N_CLIENT), s2n_connection_ptr_free);
EXPECT_NOT_NULL(conn);
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
/* PQ kem groups aren't sent in the supported groups extension before TLS 1.3. */
conn->actual_protocol_version = S2N_TLS13;
DEFER_CLEANUP(struct s2n_stuffer extension_stuffer = { 0 }, s2n_stuffer_free);
EXPECT_SUCCESS(s2n_stuffer_growable_alloc(&extension_stuffer, 0));
EXPECT_SUCCESS(s2n_client_supported_groups_extension.send(conn, &extension_stuffer));
uint16_t extension_groups_count = 0;
EXPECT_OK(s2n_supported_groups_parse_count(&extension_stuffer, &extension_groups_count));
EXPECT_EQUAL(extension_groups_count, expected_groups_count);
for (size_t i = 0; i < supported_groups_count; i++) {
/* s2n_stuffer_read_uint16 is used to read each of the supported groups in
* network-order endianness.
*/
uint16_t group_iana = 0;
POSIX_GUARD(s2n_stuffer_read_uint16(&extension_stuffer, &group_iana));
EXPECT_EQUAL(group_iana, supported_groups[i]);
}
}
}
END_TEST();
}
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