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/* $OpenBSD: crypto_init.c,v 1.26 2025/06/11 07:41:12 tb Exp $ */
/*
* Copyright (c) 2018 Bob Beck <beck@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* OpenSSL style init */
#include <pthread.h>
#include <stdio.h>
#include <openssl/asn1.h>
#include <openssl/conf.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509v3.h>
#include "crypto_internal.h"
#include "err_local.h"
#include "x509_issuer_cache.h"
int OpenSSL_config(const char *);
int OpenSSL_no_config(void);
static pthread_once_t crypto_init_once = PTHREAD_ONCE_INIT;
static pthread_t crypto_init_thread;
static int crypto_init_cleaned_up;
void openssl_init_crypto_constructor(void) __attribute__((constructor));
#ifndef HAVE_CRYPTO_CPU_CAPS_INIT
void
crypto_cpu_caps_init(void)
{
}
#endif
/*
* This function is invoked as a constructor when the library is loaded. The
* code run from here must not allocate memory or trigger signals. The only
* safe code is to read data and update global variables.
*/
void
openssl_init_crypto_constructor(void)
{
crypto_cpu_caps_init();
}
/*
* This is used by various configure scripts to check availability of libcrypto,
* so we need to keep it.
*/
void
OPENSSL_init(void)
{
}
LCRYPTO_ALIAS(OPENSSL_init);
static void
OPENSSL_init_crypto_internal(void)
{
crypto_init_thread = pthread_self();
ERR_load_crypto_strings();
}
int
OPENSSL_init_crypto(uint64_t opts, const void *settings)
{
if (crypto_init_cleaned_up) {
CRYPTOerror(ERR_R_INIT_FAIL);
return 0;
}
if (pthread_equal(pthread_self(), crypto_init_thread))
return 1; /* don't recurse */
if (pthread_once(&crypto_init_once, OPENSSL_init_crypto_internal) != 0)
return 0;
if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) &&
(OpenSSL_no_config() == 0))
return 0;
if ((opts & OPENSSL_INIT_LOAD_CONFIG) &&
(OpenSSL_config(NULL) == 0))
return 0;
return 1;
}
LCRYPTO_ALIAS(OPENSSL_init_crypto);
void
OPENSSL_cleanup(void)
{
/* This currently calls init... */
ERR_free_strings();
CRYPTO_cleanup_all_ex_data();
EVP_cleanup();
X509_VERIFY_PARAM_table_cleanup();
x509_issuer_cache_free();
crypto_init_cleaned_up = 1;
}
LCRYPTO_ALIAS(OPENSSL_cleanup);
void
OpenSSL_add_all_ciphers(void)
{
}
LCRYPTO_ALIAS(OpenSSL_add_all_ciphers);
void
OpenSSL_add_all_digests(void)
{
}
LCRYPTO_ALIAS(OpenSSL_add_all_digests);
void
OPENSSL_add_all_algorithms_noconf(void)
{
}
LCRYPTO_ALIAS(OPENSSL_add_all_algorithms_noconf);
void
OPENSSL_add_all_algorithms_conf(void)
{
OPENSSL_config(NULL);
}
LCRYPTO_ALIAS(OPENSSL_add_all_algorithms_conf);
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