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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 "s2n_test.h"
#include "tls/extensions/s2n_server_alpn.h"
#include "tls/s2n_connection.h"
int main(int argc, char **argv)
{
BEGIN_TEST();
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
const char *test_protocol_name = "chosen_protocol";
const uint8_t test_protocol_name_size = strlen(test_protocol_name);
/* Test should_send */
{
struct s2n_connection *conn = NULL;
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_SERVER));
/* Should not send if protocol not set. Protocol not set by default. */
EXPECT_FALSE(s2n_server_alpn_extension.should_send(conn));
/* Should send if protocol set. */
EXPECT_MEMCPY_SUCCESS(conn->application_protocol, test_protocol_name, test_protocol_name_size);
EXPECT_TRUE(s2n_server_alpn_extension.should_send(conn));
EXPECT_SUCCESS(s2n_connection_free(conn));
};
/* Test send */
{
struct s2n_connection *conn = NULL;
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_SERVER));
EXPECT_MEMCPY_SUCCESS(conn->application_protocol, test_protocol_name, test_protocol_name_size);
struct s2n_stuffer stuffer = { 0 };
EXPECT_SUCCESS(s2n_stuffer_growable_alloc(&stuffer, 0));
EXPECT_SUCCESS(s2n_server_alpn_extension.send(conn, &stuffer));
/* Should have correct total size */
uint16_t protocol_name_list_size = 0;
EXPECT_SUCCESS(s2n_stuffer_read_uint16(&stuffer, &protocol_name_list_size));
EXPECT_EQUAL(protocol_name_list_size, s2n_stuffer_data_available(&stuffer));
/* Should have correct protocol name size */
uint8_t protocol_name_size = 0;
EXPECT_SUCCESS(s2n_stuffer_read_uint8(&stuffer, &protocol_name_size));
EXPECT_EQUAL(protocol_name_size, s2n_stuffer_data_available(&stuffer));
EXPECT_EQUAL(protocol_name_size, test_protocol_name_size);
/* Should have correct protocol name */
uint8_t *protocol_name = NULL;
EXPECT_NOT_NULL(protocol_name = s2n_stuffer_raw_read(&stuffer, protocol_name_size));
EXPECT_BYTEARRAY_EQUAL(protocol_name, test_protocol_name, test_protocol_name_size);
EXPECT_SUCCESS(s2n_stuffer_free(&stuffer));
EXPECT_SUCCESS(s2n_connection_free(conn));
};
/* Test recv */
{
struct s2n_connection *server_conn = NULL;
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_MEMCPY_SUCCESS(server_conn->application_protocol, test_protocol_name, test_protocol_name_size);
/* Should accept extension written by send */
{
struct s2n_connection *client_conn = NULL;
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
struct s2n_stuffer stuffer = { 0 };
EXPECT_SUCCESS(s2n_stuffer_growable_alloc(&stuffer, 0));
EXPECT_SUCCESS(s2n_server_alpn_extension.send(server_conn, &stuffer));
EXPECT_NULL(s2n_get_application_protocol(client_conn));
EXPECT_SUCCESS(s2n_server_alpn_extension.recv(client_conn, &stuffer));
EXPECT_NOT_NULL(s2n_get_application_protocol(client_conn));
EXPECT_STRING_EQUAL(s2n_get_application_protocol(client_conn), test_protocol_name);
EXPECT_EQUAL(s2n_stuffer_data_available(&stuffer), 0);
EXPECT_SUCCESS(s2n_connection_free(client_conn));
EXPECT_SUCCESS(s2n_stuffer_free(&stuffer));
};
/* Should ignore extension if protocol name list size incorrect */
{
struct s2n_connection *client_conn = NULL;
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
struct s2n_stuffer stuffer = { 0 };
EXPECT_SUCCESS(s2n_stuffer_growable_alloc(&stuffer, 0));
EXPECT_SUCCESS(s2n_server_alpn_extension.send(server_conn, &stuffer));
EXPECT_SUCCESS(s2n_stuffer_wipe_n(&stuffer, 1));
EXPECT_NULL(s2n_get_application_protocol(client_conn));
EXPECT_SUCCESS(s2n_server_alpn_extension.recv(client_conn, &stuffer));
EXPECT_NULL(s2n_get_application_protocol(client_conn));
EXPECT_SUCCESS(s2n_connection_free(client_conn));
EXPECT_SUCCESS(s2n_stuffer_free(&stuffer));
};
EXPECT_SUCCESS(s2n_connection_free(server_conn));
};
/* Send and receive maximum-sized alpn */
{
const uint8_t max_size = UINT8_MAX;
DEFER_CLEANUP(struct s2n_connection *client = s2n_connection_new(S2N_CLIENT),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(client);
EXPECT_NULL(s2n_get_application_protocol(client));
DEFER_CLEANUP(struct s2n_connection *server = s2n_connection_new(S2N_SERVER),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(server);
memset(server->application_protocol, 'a', sizeof(server->application_protocol) - 1);
DEFER_CLEANUP(struct s2n_stuffer stuffer = { 0 }, s2n_stuffer_free);
EXPECT_SUCCESS(s2n_stuffer_growable_alloc(&stuffer, 0));
EXPECT_SUCCESS(s2n_server_alpn_extension.send(server, &stuffer));
EXPECT_SUCCESS(s2n_server_alpn_extension.recv(client, &stuffer));
EXPECT_EQUAL(s2n_stuffer_data_available(&stuffer), 0);
const char *client_alpn = s2n_get_application_protocol(client);
EXPECT_NOT_NULL(client_alpn);
EXPECT_EQUAL(strlen(client_alpn), max_size);
EXPECT_STRING_EQUAL(client_alpn, server->application_protocol);
};
END_TEST();
return 0;
}
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