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/*
* Copyright (C) 2010 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA
*
*/
#include <gnutls_int.h>
#include <gnutls_errors.h>
#include <gcrypt.h>
#include <locks.h>
#define GNUTLS_MIN_LIBGCRYPT_VERSION "1.2.4"
/* Functions that refer to the initialization of the libgcrypt library.
*/
static struct gcry_thread_cbs gct = {
.option = (GCRY_THREAD_OPTION_PTHREAD | (GCRY_THREAD_OPTION_VERSION << 8)),
.init = NULL,
.select = NULL,
.waitpid = NULL,
.accept = NULL,
.connect = NULL,
.sendmsg = NULL,
.recvmsg = NULL,
};
int gnutls_crypto_init(void)
{
/* Initialize libgcrypt if it hasn't already been initialized. */
if (gcry_control (GCRYCTL_ANY_INITIALIZATION_P) == 0)
{
const char *p;
if (gnutls_mutex_init != NULL)
{
gct.mutex_init = gnutls_mutex_init;
gct.mutex_destroy = gnutls_mutex_deinit;
gct.mutex_lock = gnutls_mutex_lock;
gct.mutex_unlock = gnutls_mutex_unlock;
gcry_control (GCRYCTL_SET_THREAD_CBS, &gct);
}
p = gcry_check_version (GNUTLS_MIN_LIBGCRYPT_VERSION);
if (p == NULL)
{
gnutls_assert ();
_gnutls_debug_log ("Checking for libgcrypt failed: %s < %s\n",
gcry_check_version (NULL),
GNUTLS_MIN_LIBGCRYPT_VERSION);
return GNUTLS_E_INCOMPATIBLE_GCRYPT_LIBRARY;
}
/* for gcrypt in order to be able to allocate memory */
gcry_control (GCRYCTL_DISABLE_SECMEM, NULL, 0);
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, NULL, 0);
gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0);
}
return 0;
}
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