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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"
#include "tls/s2n_renegotiate.h"
#include "tls/s2n_tls.h"
#include "utils/s2n_safety.h"
#include "utils/s2n_socket.h"
/* We use bitflags to test every combination
* of where application data could appear in renegotiation.
*
* So app_data_case==6 would mean "110", so we would be testing
* a renegotiation handshake that received application data
* before and after the server hello.
*/
enum S2N_TEST_APP_DATA_CASES {
S2N_TEST_APP_DATA_BEFORE_RENEG = 1,
S2N_TEST_APP_DATA_BEFORE_SERVER_HELLO = 2,
S2N_TEST_APP_DATA_AFTER_SERVER_HELLO = 4,
S2N_TEST_MAX_TEST_CASES = 8,
};
#define S2N_TEST_APP_DATA_LEN 10
static S2N_RESULT s2n_renegotiate_test_server_and_client(struct s2n_connection *server_conn, struct s2n_connection *client_conn)
{
ssize_t app_data_read = 0;
uint8_t recv_buffer[1] = { 0 };
s2n_blocked_status blocked = S2N_NOT_BLOCKED;
while (s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked) != S2N_SUCCESS) {
RESULT_ENSURE_EQ(s2n_errno, S2N_ERR_IO_BLOCKED);
RESULT_ENSURE_EQ(blocked, S2N_BLOCKED_ON_READ);
RESULT_ENSURE_EQ(app_data_read, 0);
s2n_negotiate(server_conn, &blocked);
}
return S2N_RESULT_OK;
}
int main(int argc, char *argv[])
{
BEGIN_TEST();
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"));
uint8_t app_data[] = "test application data";
s2n_blocked_status blocked = S2N_NOT_BLOCKED;
/* Test basic renegotiation */
{
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));
/* First handshake */
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(server_conn));
/* Second handshake */
EXPECT_OK(s2n_renegotiate_test_server_and_client(server_conn, client_conn));
};
/* Test that s2n_renegotiate can handle ApplicationData */
{
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));
ssize_t app_data_read = 0;
uint8_t recv_buffer[sizeof(app_data)] = { 0 };
/* First handshake */
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(server_conn));
/* Server sends ApplicationData */
EXPECT_EQUAL(s2n_send(server_conn, app_data, sizeof(app_data), &blocked), sizeof(app_data));
/* Client receives ApplicationData */
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked),
S2N_ERR_APP_DATA_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_APPLICATION_DATA);
EXPECT_EQUAL(app_data_read, sizeof(app_data));
EXPECT_BYTEARRAY_EQUAL(recv_buffer, app_data, sizeof(app_data));
/* Client also made progress on the handshake */
EXPECT_EQUAL(s2n_conn_get_current_message_type(client_conn), SERVER_HELLO);
/* Finish renegotiation */
EXPECT_OK(s2n_renegotiate_test_server_and_client(server_conn, client_conn));
};
/* Test that s2n_renegotiate can handle an ApplicationData fragment larger than the receive buffer */
{
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));
ssize_t app_data_read = 0;
uint8_t recv_buffer[sizeof(app_data)] = { 0 };
/* First handshake */
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(server_conn));
/* Server sends ApplicationData */
EXPECT_EQUAL(s2n_send(server_conn, app_data, sizeof(app_data), &blocked), sizeof(app_data));
/* Client receives first part of ApplicationData */
const size_t first_read_len = 2;
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, first_read_len, &app_data_read, &blocked),
S2N_ERR_APP_DATA_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_APPLICATION_DATA);
EXPECT_EQUAL(app_data_read, first_read_len);
EXPECT_BYTEARRAY_EQUAL(recv_buffer, app_data, first_read_len);
/* Client also made progress on the handshake */
EXPECT_EQUAL(s2n_conn_get_current_message_type(client_conn), SERVER_HELLO);
/* Client receives second part of ApplicationData */
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer + first_read_len,
sizeof(app_data) - first_read_len, &app_data_read, &blocked),
S2N_ERR_APP_DATA_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_APPLICATION_DATA);
EXPECT_EQUAL(app_data_read, sizeof(app_data) - first_read_len);
EXPECT_BYTEARRAY_EQUAL(recv_buffer, app_data, sizeof(app_data));
/* Client waits for more data */
for (size_t i = 0; i < 10; i++) {
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer),
&app_data_read, &blocked),
S2N_ERR_IO_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_READ);
EXPECT_EQUAL(app_data_read, 0);
}
/* Finish renegotiation */
EXPECT_OK(s2n_renegotiate_test_server_and_client(server_conn, client_conn));
};
/* Test that s2n_renegotiate can handle multiple ApplicationData records */
{
const size_t app_data_record_count = 10;
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));
ssize_t app_data_read = 0;
uint8_t recv_buffer[sizeof(app_data)] = { 0 };
/* First handshake */
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(server_conn));
/* Server sends ApplicationData */
for (size_t i = 0; i < app_data_record_count; i++) {
EXPECT_EQUAL(s2n_send(server_conn, app_data, sizeof(app_data), &blocked), sizeof(app_data));
}
/* Client receives ApplicationData */
for (size_t i = 0; i < app_data_record_count; i++) {
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer),
&app_data_read, &blocked),
S2N_ERR_APP_DATA_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_APPLICATION_DATA);
EXPECT_EQUAL(app_data_read, sizeof(app_data));
EXPECT_BYTEARRAY_EQUAL(recv_buffer, app_data, sizeof(app_data));
memset(recv_buffer, 0, sizeof(recv_buffer));
}
/* Client also made progress on the handshake */
EXPECT_EQUAL(s2n_conn_get_current_message_type(client_conn), SERVER_HELLO);
/* Finish renegotiation */
EXPECT_OK(s2n_renegotiate_test_server_and_client(server_conn, client_conn));
};
/* Test that s2n_renegotiate rejects ApplicationData after receiving the ServerHello */
{
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));
ssize_t app_data_read = 0;
uint8_t recv_buffer[sizeof(app_data)] = { 0 };
/* First handshake */
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(server_conn));
/* Client writes ClientHello */
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked),
S2N_ERR_IO_BLOCKED);
EXPECT_EQUAL(s2n_conn_get_current_message_type(client_conn), SERVER_HELLO);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_READ);
/* Server writes ServerHello */
EXPECT_FAILURE_WITH_ERRNO(s2n_negotiate(server_conn, &blocked), S2N_ERR_IO_BLOCKED);
EXPECT_NOT_EQUAL(s2n_conn_get_current_message_type(server_conn), SERVER_HELLO);
EXPECT_TRUE(IS_NEGOTIATED(server_conn));
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_READ);
/* Server sends ApplicationData */
EXPECT_EQUAL(s2n_send(server_conn, app_data, sizeof(app_data), &blocked), sizeof(app_data));
/* Client rejects ApplicationData */
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked),
S2N_ERR_BAD_MESSAGE);
EXPECT_NOT_EQUAL(s2n_conn_get_current_message_type(server_conn), SERVER_HELLO);
EXPECT_TRUE(IS_NEGOTIATED(server_conn));
};
/* Test that s2n_renegotiate rejects incorrect handshake messages */
{
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));
ssize_t app_data_read = 0;
uint8_t recv_buffer[sizeof(app_data)] = { 0 };
/* First handshake */
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(server_conn));
/* Client writes ClientHello */
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked),
S2N_ERR_IO_BLOCKED);
EXPECT_EQUAL(s2n_conn_get_current_message_type(client_conn), SERVER_HELLO);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_READ);
/* Server reads ClientHello */
EXPECT_OK(s2n_negotiate_until_message(server_conn, &blocked, SERVER_HELLO));
/* Server writes wrong message.
* We use "SERVER_HELLO_DONE" because it's an empty message and requires no setup.
*/
server_conn->handshake.handshake_type = NEGOTIATED | FULL_HANDSHAKE;
server_conn->handshake.message_number = 3;
EXPECT_EQUAL(s2n_conn_get_current_message_type(server_conn), SERVER_HELLO_DONE);
EXPECT_FAILURE_WITH_ERRNO(s2n_negotiate(server_conn, &blocked), S2N_ERR_IO_BLOCKED);
/* Client rejects unexpected message */
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked),
S2N_ERR_BAD_MESSAGE);
EXPECT_EQUAL(s2n_conn_get_current_message_type(client_conn), SERVER_HELLO);
};
/* Test that s2n_renegotiate handles handshake IO blocked on send */
{
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));
uint8_t recv_buffer[1] = { 0 };
/* First handshake */
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(client_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(server_conn));
/* Block send IO with empty buffer */
DEFER_CLEANUP(struct s2n_stuffer output = { 0 }, s2n_stuffer_free);
EXPECT_SUCCESS(s2n_connection_set_send_io_stuffer(&output, client_conn));
/* Verify send is blocked on write */
ssize_t app_data_read = 0;
for (size_t i = 0; i < 10; i++) {
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked),
S2N_ERR_IO_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_WRITE);
EXPECT_EQUAL(app_data_read, 0);
}
/* Unblock send IO by allocating buffer */
EXPECT_SUCCESS(s2n_stuffer_growable_alloc(&output, 0));
/* Verify send blocks on read */
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked),
S2N_ERR_IO_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_READ);
EXPECT_EQUAL(app_data_read, 0);
};
/* Test timing of application data during the renegotiation handshake.
*
* We want to ensure that s2n_renegotiate can handle ApplicationData at any time.
*/
{
uint8_t messages[][S2N_TEST_APP_DATA_LEN] = {
"one", "two", "three"
};
EXPECT_EQUAL(1 << s2n_array_len(messages), S2N_TEST_MAX_TEST_CASES);
/* Sanity checks
* We want to ensure all interesting cases are hit at least once.
*/
bool reneg_ch_had_app_data = false;
bool reneg_ch_had_no_app_data = false;
bool reneg_extra_app_data = false;
bool reneg_sh_had_app_data = false;
bool reneg_sh_had_no_app_data = false;
for (size_t app_data_case = 0; app_data_case < S2N_TEST_MAX_TEST_CASES; app_data_case++) {
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));
ssize_t app_data_read = 0;
uint8_t recv_buffer[S2N_TEST_APP_DATA_LEN * 2] = { 0 };
size_t send_i = 0, recv_i = 0;
/* First handshake */
EXPECT_SUCCESS(s2n_negotiate_test_server_and_client(server_conn, client_conn));
/* Before Renegotiation */
{
if (app_data_case & S2N_TEST_APP_DATA_BEFORE_RENEG) {
EXPECT_EQUAL(s2n_send(server_conn, messages[send_i], S2N_TEST_APP_DATA_LEN, &blocked), S2N_TEST_APP_DATA_LEN);
send_i++;
}
EXPECT_SUCCESS(s2n_renegotiate_wipe(server_conn));
EXPECT_SUCCESS(s2n_renegotiate_wipe(client_conn));
};
/* Client: ClientHello sent */
{
int r = s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked);
EXPECT_EQUAL(s2n_conn_get_current_message_type(client_conn), SERVER_HELLO);
/* Expect to have received any outstanding application data */
if (send_i > 0 && recv_i < send_i) {
EXPECT_FAILURE_WITH_ERRNO(r, S2N_ERR_APP_DATA_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_APPLICATION_DATA);
EXPECT_EQUAL(app_data_read, S2N_TEST_APP_DATA_LEN);
EXPECT_BYTEARRAY_EQUAL(recv_buffer, messages[recv_i], S2N_TEST_APP_DATA_LEN);
recv_i++;
reneg_ch_had_app_data = true;
} else {
EXPECT_FAILURE_WITH_ERRNO(r, S2N_ERR_IO_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_READ);
EXPECT_EQUAL(app_data_read, 0);
reneg_ch_had_no_app_data = true;
}
};
/* Server: ClientHello recv, ServerHello sent */
{
if (app_data_case & S2N_TEST_APP_DATA_BEFORE_SERVER_HELLO) {
EXPECT_EQUAL(s2n_send(server_conn, messages[send_i], S2N_TEST_APP_DATA_LEN, &blocked), S2N_TEST_APP_DATA_LEN);
send_i++;
}
EXPECT_FAILURE_WITH_ERRNO(s2n_negotiate(server_conn, &blocked), S2N_ERR_IO_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_READ);
EXPECT_NOT_EQUAL(s2n_conn_get_current_message_type(server_conn), SERVER_HELLO);
EXPECT_TRUE(IS_NEGOTIATED(server_conn));
/* All application data sent after the ServerHello is invalid.
* We specifically don't increment sent_i, because we won't use this data.
*/
if (app_data_case & S2N_TEST_APP_DATA_AFTER_SERVER_HELLO) {
EXPECT_EQUAL(s2n_send(server_conn, messages[send_i], S2N_TEST_APP_DATA_LEN, &blocked), S2N_TEST_APP_DATA_LEN);
}
};
/* Client: ApplicationData recv */
while (send_i > 0 && recv_i < send_i) {
EXPECT_FAILURE_WITH_ERRNO(s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked),
S2N_ERR_APP_DATA_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_APPLICATION_DATA);
EXPECT_EQUAL(s2n_conn_get_current_message_type(client_conn), SERVER_HELLO);
EXPECT_EQUAL(app_data_read, S2N_TEST_APP_DATA_LEN);
EXPECT_BYTEARRAY_EQUAL(recv_buffer, messages[recv_i], S2N_TEST_APP_DATA_LEN);
recv_i++;
reneg_extra_app_data = true;
}
/* Client: ServerHello recv */
{
int r = s2n_renegotiate(client_conn, recv_buffer, sizeof(recv_buffer), &app_data_read, &blocked);
/* No application data is allowed after the ServerHello */
if (app_data_case & S2N_TEST_APP_DATA_AFTER_SERVER_HELLO) {
EXPECT_FAILURE_WITH_ERRNO(r, S2N_ERR_BAD_MESSAGE);
reneg_sh_had_app_data = true;
continue;
}
EXPECT_FAILURE_WITH_ERRNO(r, S2N_ERR_IO_BLOCKED);
EXPECT_EQUAL(blocked, S2N_BLOCKED_ON_READ);
EXPECT_NOT_EQUAL(s2n_conn_get_current_message_type(client_conn), SERVER_HELLO);
EXPECT_TRUE(IS_NEGOTIATED(client_conn));
reneg_sh_had_no_app_data = true;
};
/* Handshake completes */
EXPECT_OK(s2n_renegotiate_test_server_and_client(server_conn, client_conn));
}
EXPECT_TRUE(reneg_ch_had_app_data);
EXPECT_TRUE(reneg_ch_had_no_app_data);
EXPECT_TRUE(reneg_extra_app_data);
EXPECT_TRUE(reneg_sh_had_app_data);
EXPECT_TRUE(reneg_sh_had_no_app_data);
};
END_TEST();
}
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