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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 <https://www.gnu.org/licenses/>
*
*/
#include "gnutls_int.h"
#include "errors.h"
#include "hello_ext.h"
#include "handshake.h"
#include "mbuffers.h"
#include "tls13/encrypted_extensions.h"
int _gnutls13_recv_encrypted_extensions(gnutls_session_t session)
{
int ret;
gnutls_buffer_st buf;
ret = _gnutls_recv_handshake(session, GNUTLS_HANDSHAKE_ENCRYPTED_EXTENSIONS, 0, &buf);
if (ret < 0)
return gnutls_assert_val(ret);
_gnutls_handshake_log("HSK[%p]: parsing encrypted extensions\n", session);
ret = _gnutls_parse_hello_extensions(session, GNUTLS_EXT_FLAG_EE, GNUTLS_EXT_ANY,
buf.data, buf.length);
_gnutls_buffer_clear(&buf);
if (ret < 0)
return gnutls_assert_val(ret);
return 0;
}
int _gnutls13_send_encrypted_extensions(gnutls_session_t session, unsigned again)
{
int ret;
mbuffer_st *bufel = NULL;
gnutls_buffer_st buf;
if (again == 0) {
ret = _gnutls_buffer_init_handshake_mbuffer(&buf);
if (ret < 0)
return gnutls_assert_val(ret);
ret = _gnutls_gen_hello_extensions(session, &buf, GNUTLS_EXT_FLAG_EE, GNUTLS_EXT_ANY);
if (ret < 0) {
gnutls_assert();
goto cleanup;
}
bufel = _gnutls_buffer_to_mbuffer(&buf);
}
return _gnutls_send_handshake(session, bufel, GNUTLS_HANDSHAKE_ENCRYPTED_EXTENSIONS);
cleanup:
_gnutls_buffer_clear(&buf);
return ret;
}
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