/*

 * Copyright (C) 2000-2012 Free Software Foundation, 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/>

 *

 */

#ifndef GNUTLS_LIB_MEM_H

#define GNUTLS_LIB_MEM_H

#include <config.h>

/* this realloc function will return ptr if size==0, and

 * will free the ptr if the new allocation failed.

 */

void *gnutls_realloc_fast(void *ptr, size_t size);

void *_gnutls_calloc(size_t nmemb, size_t size);

char *_gnutls_strdup(const char *);

unsigned _gnutls_mem_is_zero(const uint8_t *ptr, unsigned size);

/* To avoid undefined behavior when s1 or s2 are null and n = 0 */

inline static

int safe_memcmp(const void *s1, const void *s2, size_t n)

{

	if (n == 0)

		return 0;

	return memcmp(s1, s2, n);

}

#define zrelease_mpi_key(mpi) if (*mpi!=NULL) { \

		_gnutls_mpi_clear(*mpi); \

		_gnutls_mpi_release(mpi); \

	}

#define zeroize_key(x, size) gnutls_memset(x, 0, size)

#define zeroize_temp_key zeroize_key

#define zrelease_temp_mpi_key zrelease_mpi_key

#endif /* GNUTLS_LIB_MEM_H */