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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 "api/s2n.h"
#include "s2n_test.h"
#include "testlib/s2n_testlib.h"
#include "tls/s2n_connection.h"
#include "tls/s2n_handshake.h"
#include "utils/s2n_safety.h"
#define TEST_DATA_SIZE 8
int main(int argc, char **argv)
{
const char *protocols[] = { "http/1.1", "spdy/3.1", "h2" };
const char *mismatch_protocols[] = { "spdy/2" };
BEGIN_TEST();
DEFER_CLEANUP(struct s2n_config *server_config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(server_config);
EXPECT_SUCCESS(s2n_config_set_protocol_preferences(server_config, protocols,
s2n_array_len(protocols)));
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(server_config, "default"));
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));
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(server_config, chain_and_key));
struct {
int client_protocol_count;
const char *const *client_protocols;
const char *expected_protocol;
} test_cases[] = {
/* Test no client ALPN request */
{
.client_protocol_count = 0,
.client_protocols = NULL,
.expected_protocol = NULL,
},
/* Test a matching ALPN request */
{
.client_protocol_count = s2n_array_len(protocols),
.client_protocols = protocols,
.expected_protocol = protocols[0],
},
/* Test a lower preferred matching ALPN request */
{
.client_protocol_count = 1,
.client_protocols = &protocols[1],
.expected_protocol = protocols[1],
},
/* Test a non-matching ALPN request */
{
.client_protocol_count = 1,
.client_protocols = mismatch_protocols,
.expected_protocol = NULL,
},
};
for (size_t i = 0; i < s2n_array_len(test_cases); i++) {
DEFER_CLEANUP(struct s2n_config *client_config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(client_config);
EXPECT_SUCCESS(s2n_config_set_protocol_preferences(client_config,
test_cases[i].client_protocols, test_cases[i].client_protocol_count));
EXPECT_SUCCESS(s2n_config_disable_x509_verification(client_config));
DEFER_CLEANUP(struct s2n_connection *client = s2n_connection_new(S2N_CLIENT),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(client);
EXPECT_SUCCESS(s2n_connection_set_config(client, client_config));
DEFER_CLEANUP(struct s2n_connection *server = s2n_connection_new(S2N_SERVER),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(server);
EXPECT_SUCCESS(s2n_connection_set_config(server, server_config));
DEFER_CLEANUP(struct s2n_test_io_stuffer_pair io_pair = { 0 }, s2n_io_stuffer_pair_free);
EXPECT_OK(s2n_io_stuffer_pair_init(&io_pair));
EXPECT_OK(s2n_connections_set_io_stuffer_pair(client, server, &io_pair));
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server, client));
if (test_cases[i].expected_protocol == NULL) {
EXPECT_NULL(s2n_get_application_protocol(server));
} else {
EXPECT_STRING_EQUAL(s2n_get_application_protocol(server),
test_cases[i].expected_protocol);
}
/* application data can be sent */
s2n_blocked_status blocked = S2N_NOT_BLOCKED;
uint8_t data_send[TEST_DATA_SIZE] = { 3, 1, 4, 1, 5, 9, 2, 6 };
uint8_t data_recv[TEST_DATA_SIZE] = { 0 };
EXPECT_EQUAL(s2n_send(client, data_send, sizeof(data_send), &blocked), sizeof(data_send));
EXPECT_EQUAL(s2n_recv(server, data_recv, sizeof(data_recv), &blocked), sizeof(data_recv));
EXPECT_BYTEARRAY_EQUAL(data_send, data_recv, sizeof(data_send));
}
/* Test a connection level application protocol */
{
DEFER_CLEANUP(struct s2n_config *client_config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(client_config);
EXPECT_SUCCESS(s2n_config_set_protocol_preferences(client_config, protocols,
s2n_array_len(protocols)));
EXPECT_SUCCESS(s2n_config_disable_x509_verification(client_config));
DEFER_CLEANUP(struct s2n_connection *client = s2n_connection_new(S2N_CLIENT),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(client);
EXPECT_SUCCESS(s2n_connection_set_config(client, client_config));
DEFER_CLEANUP(struct s2n_connection *server = s2n_connection_new(S2N_SERVER),
s2n_connection_ptr_free);
EXPECT_NOT_NULL(server);
EXPECT_SUCCESS(s2n_connection_set_config(server, server_config));
/* override the server (connection) preferences to only contain h2 */
EXPECT_SUCCESS(s2n_connection_set_protocol_preferences(server, &protocols[2], 1));
DEFER_CLEANUP(struct s2n_test_io_stuffer_pair io_pair = { 0 }, s2n_io_stuffer_pair_free);
EXPECT_OK(s2n_io_stuffer_pair_init(&io_pair));
EXPECT_OK(s2n_connections_set_io_stuffer_pair(client, server, &io_pair));
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server, client));
/* despite being least preferred for the server_config and client, the
* connection override correctly caused h2 to be negotiated
*/
EXPECT_STRING_EQUAL(s2n_get_application_protocol(server), protocols[2]);
}
END_TEST();
return 0;
}
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