/*

 * Copyright (C) 2013 Red Hat

 *

 * 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/>

 *

 */

#ifndef FIPS_H

# define FIPS_H

#include "gnutls_int.h"

#include <gnutls/gnutls.h>

#define FIPS140_RND_KEY_SIZE 32

typedef enum {

  LIB_STATE_POWERON,

  LIB_STATE_INIT,

  LIB_STATE_SELFTEST,

  LIB_STATE_OPERATIONAL,

  LIB_STATE_ERROR,

  LIB_STATE_SHUTDOWN

} gnutls_lib_state_t;

/* do not access directly */

extern unsigned int _gnutls_lib_mode;

extern gnutls_crypto_rnd_st _gnutls_fips_rnd_ops;

inline static 

void _gnutls_switch_lib_state(gnutls_lib_state_t state)

{

	/* Once into zombie state no errors can change us */

	_gnutls_lib_mode = state;

}

inline static gnutls_lib_state_t _gnutls_get_lib_state(void)

{

	return _gnutls_lib_mode;

}

int _gnutls_fips_perform_self_checks1(void);

int _gnutls_fips_perform_self_checks2(void);

void _gnutls_fips_mode_reset_zombie(void);

#ifdef ENABLE_FIPS140

unsigned _gnutls_fips_mode_enabled(void);

#else

# define _gnutls_fips_mode_enabled() 0

#endif

# define HAVE_LIB_ERROR() unlikely(_gnutls_get_lib_state() != LIB_STATE_OPERATIONAL && _gnutls_get_lib_state() != LIB_STATE_SELFTEST)

# define FAIL_IF_LIB_ERROR \

	if (HAVE_LIB_ERROR()) return GNUTLS_E_LIB_IN_ERROR_STATE

void _gnutls_switch_lib_state(gnutls_lib_state_t state);

void _gnutls_lib_simulate_error(void);

void _gnutls_lib_force_operational(void);

#endif /* FIPS_H */