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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 <stdint.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#include "api/s2n.h"
#include "s2n_test.h"
#include "testlib/s2n_testlib.h"
#include "tls/s2n_connection.h"
#include "tls/s2n_handshake.h"
#include "tls/s2n_tls13.h"
void mock_client(struct s2n_test_io_pair *io_pair)
{
char buffer[0xffff] = { 0 };
struct s2n_connection *conn = NULL;
struct s2n_config *config = NULL;
s2n_blocked_status blocked;
/* Give the server a chance to listen */
sleep(1);
conn = s2n_connection_new(S2N_CLIENT);
config = s2n_config_new();
s2n_config_disable_x509_verification(config);
s2n_config_set_cipher_preferences(config, "default_tls13");
s2n_connection_set_config(conn, config);
s2n_connection_set_io_pair(conn, io_pair);
s2n_connection_prefer_throughput(conn);
s2n_negotiate(conn, &blocked);
s2n_connection_free_handshake(conn);
uint16_t timeout = 1;
s2n_connection_set_dynamic_record_threshold(conn, 0x7fff, timeout);
int i;
for (i = 1; i < 0xffff - 100; i += 100) {
for (int j = 0; j < i; j++) {
buffer[j] = 33;
}
s2n_send(conn, buffer, i, &blocked);
}
for (int j = 0; j < i; j++) {
buffer[j] = 33;
}
/* release the buffers here to validate we can continue IO after */
s2n_connection_release_buffers(conn);
/* Simulate timeout second conneciton inactivity and tolerate 50 ms error */
struct timespec sleep_time = { .tv_sec = timeout, .tv_nsec = 50000000 };
int r;
do {
r = nanosleep(&sleep_time, &sleep_time);
} while (r != 0);
/* Active application bytes consumed is reset to 0 in before writing data. */
/* Its value should equal to bytes written after writing */
ssize_t bytes_written = s2n_send(conn, buffer, i, &blocked);
if ((uint64_t) bytes_written != conn->active_application_bytes_consumed) {
exit(1);
}
int shutdown_rc = -1;
while (shutdown_rc != 0) {
shutdown_rc = s2n_shutdown(conn, &blocked);
}
s2n_connection_free(conn);
s2n_config_free(config);
/* Give the server a chance to a void a sigpipe */
sleep(1);
s2n_io_pair_close_one_end(io_pair, S2N_CLIENT);
exit(0);
}
int main(int argc, char **argv)
{
struct s2n_connection *conn = NULL;
struct s2n_config *config = NULL;
s2n_blocked_status blocked;
int status;
pid_t pid;
BEGIN_TEST();
/* Create a pipe */
struct s2n_test_io_pair io_pair;
EXPECT_SUCCESS(s2n_io_pair_init(&io_pair));
/* Create a child process */
pid = fork();
if (pid == 0) {
/* This is the client process, close the server end of the pipe */
EXPECT_SUCCESS(s2n_io_pair_close_one_end(&io_pair, S2N_SERVER));
/* Write the fragmented hello message */
mock_client(&io_pair);
}
/* This is the server process, close the client end of the pipe */
EXPECT_SUCCESS(s2n_io_pair_close_one_end(&io_pair, S2N_CLIENT));
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_SERVER));
struct s2n_cert_chain_and_key *chain_and_key;
EXPECT_SUCCESS(s2n_test_cert_chain_and_key_new(&chain_and_key,
S2N_DEFAULT_ECDSA_TEST_CERT_CHAIN, S2N_DEFAULT_ECDSA_TEST_PRIVATE_KEY));
EXPECT_NOT_NULL(config = s2n_config_new());
EXPECT_SUCCESS(s2n_config_set_cipher_preferences(config, "default_tls13"));
EXPECT_SUCCESS(s2n_config_add_cert_chain_and_key_to_store(config, chain_and_key));
EXPECT_SUCCESS(s2n_connection_set_config(conn, config));
EXPECT_SUCCESS(s2n_connection_prefer_throughput(conn));
/* Set up the connection to read from the fd */
EXPECT_SUCCESS(s2n_connection_set_io_pair(conn, &io_pair));
/* Negotiate the handshake. */
EXPECT_SUCCESS(s2n_negotiate(conn, &blocked));
EXPECT_NOT_NULL(s2n_connection_get_client_hello(conn));
EXPECT_EQUAL(conn->actual_protocol_version, s2n_get_highest_fully_supported_tls_version());
char buffer[0xffff];
for (int i = 1; i < 0xffff; i += 100) {
char *ptr = buffer;
int size = i;
do {
int bytes_read = 0;
EXPECT_SUCCESS(bytes_read = s2n_recv(conn, ptr, size, &blocked));
size -= bytes_read;
ptr += bytes_read;
} while (size);
for (int j = 0; j < i; j++) {
EXPECT_EQUAL(buffer[j], 33);
}
/* release the buffers here to validate we can continue IO after */
EXPECT_SUCCESS(s2n_connection_release_buffers(conn));
}
int shutdown_rc = -1;
do {
shutdown_rc = s2n_shutdown(conn, &blocked);
EXPECT_TRUE(shutdown_rc == 0 || (errno == EAGAIN && blocked));
} while (shutdown_rc != 0);
EXPECT_SUCCESS(s2n_connection_free(conn));
EXPECT_SUCCESS(s2n_config_free(config));
/* Clean up */
EXPECT_EQUAL(waitpid(-1, &status, 0), pid);
EXPECT_EQUAL(status, 0);
EXPECT_SUCCESS(s2n_io_pair_close_one_end(&io_pair, S2N_SERVER));
EXPECT_SUCCESS(s2n_cert_chain_and_key_free(chain_and_key));
s2n_disable_tls13_in_test();
END_TEST();
return 0;
}
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