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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/>
*
*/
/* Functions that relate to the TLS handshake procedure.
*/
#include "gnutls_int.h"
#include "errors.h"
#include "dh.h"
#include "debug.h"
#include "algorithms.h"
#include "cipher.h"
#include "buffers.h"
#include "mbuffers.h"
#include "kx.h"
#include "handshake.h"
#include "num.h"
#include "hash_int.h"
#include "db.h"
#include "hello_ext.h"
#include "supplemental.h"
#include "auth.h"
#include "sslv2_compat.h"
#include <auth/cert.h>
#include "constate.h"
#include <record.h>
#include <state.h>
#include <random.h>
#include <dtls.h>
/*
* _gnutls13_handshake_client
* This function performs the client side of the handshake of the TLS/SSL protocol.
*/
int _gnutls13_handshake_client(gnutls_session_t session)
{
int ret = 0;
switch (STATE) {
case STATE100:
abort();
STATE = STATE100;
IMED_RET("recv encrypted extensions", ret, 0);
/* fall through */
case STATE101:
abort();
STATE = STATE101;
IMED_RET("recv certificate request", ret, 0);
/* fall through */
case STATE102:
abort();
STATE = STATE102;
IMED_RET("recv certificate", ret, 0);
/* fall through */
case STATE103:
abort();
STATE = STATE103;
IMED_RET("recv server certificate verify", ret, 0);
/* fall through */
case STATE104:
ret = _gnutls_run_verify_callback(session, GNUTLS_CLIENT);
STATE = STATE102;
if (ret < 0)
return gnutls_assert_val(ret);
FALLTHROUGH;
case STATE105:
abort();
STATE = STATE105;
IMED_RET("recv finished", ret, 0);
/* fall through */
case STATE106:
abort();
STATE = STATE106;
IMED_RET("send certificate", ret, 0);
/* fall through */
case STATE107:
abort();
STATE = STATE107;
IMED_RET("send certificate verify", ret, 0);
/* fall through */
case STATE108:
abort();
STATE = STATE108;
IMED_RET("send finished", ret, 0);
STATE = STATE0;
break;
default:
return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR);
}
/* explicitly reset any false start flags */
session->internals.recv_state = RECV_STATE_0;
return 0;
}
/*
* _gnutls13_handshake_server
* This function does the server stuff of the handshake protocol.
*/
int _gnutls13_handshake_server(gnutls_session_t session)
{
int ret = 0;
switch (STATE) {
case STATE100:
case STATE101:
abort();
STATE = STATE101;
IMED_RET("send encrypted extensions", ret, 0);
/* fall through */
case STATE102:
abort();
STATE = STATE102;
IMED_RET("send certificate request", ret, 0);
/* fall through */
case STATE103:
abort();
STATE = STATE103;
IMED_RET("send certificate", ret, 0);
/* fall through */
case STATE104:
abort();
STATE = STATE104;
IMED_RET("send certificate verify", ret, 0);
/* fall through */
case STATE105:
abort();
STATE = STATE105;
IMED_RET("send finished", ret, 0);
/* fall through */
case STATE106:
abort();
STATE = STATE106;
IMED_RET("recv certificate", ret, 0);
/* fall through */
case STATE107:
abort();
STATE = STATE107;
IMED_RET("recv certificate verify", ret, 0);
/* fall through */
case STATE108:
ret = _gnutls_run_verify_callback(session, GNUTLS_SERVER);
STATE = STATE108;
if (ret < 0)
return gnutls_assert_val(ret);
/* fall through */
case STATE109:
abort();
STATE = STATE109;
IMED_RET("recv finished", ret, 0);
/* fall through */
STATE = STATE0;
break;
default:
return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR);
}
return 0;
}
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