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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 <sys/param.h>
#include <stdint.h>
#include "tls/extensions/s2n_client_renegotiation_info.h"
#include "tls/s2n_tls.h"
#include "utils/s2n_safety.h"
static int s2n_client_renegotiation_recv(struct s2n_connection *conn, struct s2n_stuffer *extension);
const s2n_extension_type s2n_client_renegotiation_info_extension = {
.iana_value = TLS_EXTENSION_RENEGOTIATION_INFO,
.is_response = false,
.send = s2n_extension_send_unimplemented,
.recv = s2n_client_renegotiation_recv,
.should_send = s2n_extension_never_send,
.if_missing = s2n_extension_noop_if_missing,
};
static int s2n_client_renegotiation_recv(struct s2n_connection *conn, struct s2n_stuffer *extension)
{
/* RFC5746 Section 3.2: The renegotiated_connection field is of zero length for the initial handshake. */
uint8_t renegotiated_connection_len;
POSIX_GUARD(s2n_stuffer_read_uint8(extension, &renegotiated_connection_len));
S2N_ERROR_IF(s2n_stuffer_data_available(extension) || renegotiated_connection_len, S2N_ERR_NON_EMPTY_RENEGOTIATION_INFO);
conn->secure_renegotiation = 1;
return S2N_SUCCESS;
}
/* Old-style extension functions -- remove after extensions refactor is complete */
int s2n_recv_client_renegotiation_info(struct s2n_connection *conn, struct s2n_stuffer *extension)
{
return s2n_extension_recv(&s2n_client_renegotiation_info_extension, conn, extension);
}
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