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/*
* Copyright (C) 2017 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
#include "gnutls_int.h"
#include "errors.h"
#include "extv.h"
#include "handshake.h"
#include "tls13/session_ticket.h"
#include "auth/cert.h"
static int parse_nst_extension(void *ctx, uint16_t tls_id, const uint8_t *data, int data_size);
int _gnutls13_send_session_ticket(gnutls_session_t session)
{
int ret;
gnutls_buffer_st buf;
mbuffer_st *bufel = NULL;
struct tls13_nst_st ticket;
/* Client does not send a NewSessionTicket */
if (unlikely(session->security_parameters.entity == GNUTLS_CLIENT))
return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR);
ret = _gnutls13_session_ticket_get(session, &ticket);
if (ret > 0) {
if ((ret = _gnutls_buffer_init_handshake_mbuffer(&buf)) < 0) {
gnutls_assert();
goto error;
}
if ((ret = _gnutls_buffer_append_prefix(buf, 32, ticket.ticket_lifetime)) < 0) {
gnutls_assert();
goto error;
}
if ((ret = _gnutls_buffer_append_prefix(buf, 32, ticket.ticket_age_add)) < 0) {
gnutls_assert();
goto error;
}
if ((ret = _gnutls_buffer_append_data_prefix(buf, 8,
ticket.ticket_nonce.data, ticket.ticket_nonce.size)) < 0) {
gnutls_assert();
goto error;
}
if ((ret = _gnutls_buffer_append_data_prefix(buf, 16,
ticket.ticket.data, ticket.ticket.size)) < 0) {
gnutls_assert();
goto error;
}
bufel = _gnutls_buffer_to_mbuffer(buf);
return _gnutls_send_handshake(session, bufel,
GNUTLS_HANDSHAKE_NEW_SESSION_TICKET);
}
return 0;
error:
_gnutls_buffer_clear(&buf);
return ret;
}
int _gnutls13_recv_session_ticket(gnutls_session_t session, gnutls_buffer_st *buf,
struct tls13_nst_st *ticket)
{
int ret;
_gnutls_handshake_log("HSK[%p]: parsing session ticket message\n", session);
/* ticket_lifetime */
ret = _gnutls_buffer_pop_prefix32(buf, &ticket->ticket_lifetime, 0);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
/* ticket_age_add */
ret = _gnutls_buffer_pop_prefix32(buf, &ticket->ticket_age_add, 0);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = _gnutls_buffer_pop_datum_prefix8(buf, &ticket->ticket_nonce);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = _gnutls_buffer_pop_datum_prefix16(buf, &ticket->ticket);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = _gnutls_extv_parse(NULL, parse_nst_extension, buf->data, buf->length);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int parse_nst_extension(void *ctx, uint16_t tls_id, const uint8_t *data, int data_size)
{
/* ignore all extensions */
return 0;
}
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