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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 "testlib/s2n_testlib.h"
int main(int argc, char **argv)
{
BEGIN_TEST();
const s2n_mode modes[] = { S2N_CLIENT, S2N_SERVER };
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));
DEFER_CLEANUP(struct s2n_config *config = s2n_config_new(), s2n_config_ptr_free);
EXPECT_NOT_NULL(config);
EXPECT_SUCCESS(s2n_config_set_unsafe_for_testing(config));
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(config, chain_and_key));
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "default"));
/* Self-Talk: shutdown during handshake */
for (size_t mode_i = 0; mode_i < s2n_array_len(modes); mode_i++) {
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, 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, config));
DEFER_CLEANUP(struct s2n_test_io_pair io_pair = { 0 }, s2n_io_pair_close);
EXPECT_SUCCESS(s2n_io_pair_init_non_blocking(&io_pair));
EXPECT_SUCCESS(s2n_connections_set_io_pair(client_conn, server_conn, &io_pair));
EXPECT_OK(s2n_negotiate_test_server_and_client_until_message(server_conn, client_conn, SERVER_CERT));
EXPECT_FALSE(s2n_handshake_is_complete(client_conn));
EXPECT_FALSE(s2n_handshake_is_complete(server_conn));
/* Choose which connection will request the shutdown */
struct s2n_connection *request = server_conn;
struct s2n_connection *response = client_conn;
if (modes[mode_i] == S2N_CLIENT) {
request = client_conn;
response = server_conn;
}
/* Both shutdown attempts should succeed */
s2n_blocked_status blocked = S2N_NOT_BLOCKED;
EXPECT_SUCCESS(s2n_shutdown(request, &blocked));
EXPECT_SUCCESS(s2n_shutdown(response, &blocked));
/* Both connections successfully closed */
EXPECT_TRUE(s2n_connection_check_io_status(server_conn, S2N_IO_CLOSED));
EXPECT_TRUE(s2n_connection_check_io_status(client_conn, S2N_IO_CLOSED));
/* Closed connections behave properly */
for (size_t i = 0; i < 5; i++) {
/* Future attempts to shutdown succeed (they are no-ops) */
EXPECT_SUCCESS(s2n_shutdown(server_conn, &blocked));
EXPECT_SUCCESS(s2n_shutdown(client_conn, &blocked));
}
};
/* Self-Talk: shutdown during application data */
for (size_t mode_i = 0; mode_i < s2n_array_len(modes); mode_i++) {
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, 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, config));
DEFER_CLEANUP(struct s2n_test_io_pair io_pair = { 0 }, s2n_io_pair_close);
EXPECT_SUCCESS(s2n_io_pair_init_non_blocking(&io_pair));
EXPECT_SUCCESS(s2n_connections_set_io_pair(client_conn, server_conn, &io_pair));
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
/* Both the client and server should send application data, but not read any.
* This leaves unread application data for both to handle.
*/
uint8_t data[] = "hello world";
s2n_blocked_status blocked = S2N_NOT_BLOCKED;
EXPECT_EQUAL(s2n_send(server_conn, data, sizeof(data), &blocked), sizeof(data));
EXPECT_EQUAL(s2n_send(client_conn, data, sizeof(data), &blocked), sizeof(data));
/* Choose which connection will request the shutdown, and which will respond */
struct s2n_connection *request = server_conn;
struct s2n_connection *response = client_conn;
if (modes[mode_i] == S2N_CLIENT) {
request = client_conn;
response = server_conn;
}
/* The requester's first shutdown attempt will send a close_notify
* but then block on receiving the response close_notify.
*/
EXPECT_FAILURE_WITH_ERRNO(s2n_shutdown(request, &blocked), S2N_ERR_IO_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_READ);
/* The responder's first shutdown attempt will receive the request close_notify,
* send the response close_notify, and then consider the shutdown successful.
*/
EXPECT_SUCCESS(s2n_shutdown(response, &blocked));
/* The requester's second shutdown attempt will receive the response close_notify
* and then consider the shutdown successful.
*/
EXPECT_SUCCESS(s2n_shutdown(request, &blocked));
/* Both connections successfully closed */
EXPECT_TRUE(s2n_connection_check_io_status(server_conn, S2N_IO_CLOSED));
EXPECT_TRUE(s2n_connection_check_io_status(client_conn, S2N_IO_CLOSED));
/* Closed connections behave properly */
for (size_t i = 0; i < 5; i++) {
/* Future attempts to shutdown succeed (they are no-ops) */
EXPECT_SUCCESS(s2n_shutdown(server_conn, &blocked));
EXPECT_SUCCESS(s2n_shutdown(client_conn, &blocked));
/* Future attempts to write fail */
EXPECT_FAILURE_WITH_ERRNO(s2n_send(server_conn, data, sizeof(data), &blocked), S2N_ERR_CLOSED);
EXPECT_FAILURE_WITH_ERRNO(s2n_send(client_conn, data, sizeof(data), &blocked), S2N_ERR_CLOSED);
/* Future attempts to read indicate end of stream */
EXPECT_EQUAL(s2n_recv(server_conn, data, sizeof(data), &blocked), 0);
EXPECT_EQUAL(s2n_recv(client_conn, data, sizeof(data), &blocked), 0);
}
};
END_TEST();
}
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