/*
 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include <openssl/crypto.h>
#include "internal/cryptlib.h"
#include "internal/conf.h"
#include <openssl/x509.h>
#include <openssl/asn1.h>
#include <openssl/engine.h>

#ifdef _WIN32
# define strdup _strdup
#endif

/*
 * This is the automatic configuration loader: it is called automatically by
 * OpenSSL when any of a number of standard initialisation functions are
 * called, unless this is overridden by calling OPENSSL_no_config()
 */

static int openssl_configured = 0;

#if OPENSSL_API_COMPAT < 0x10100000L
void OPENSSL_config(const char *appname)
{
    OPENSSL_INIT_SETTINGS settings;

    memset(&settings, 0, sizeof(settings));
    if (appname != NULL)
        settings.appname = strdup(appname);
    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, &settings);
}
#endif

void openssl_config_int(const char *appname)
{
    if (openssl_configured)
        return;

    OPENSSL_load_builtin_modules();
#ifndef OPENSSL_NO_ENGINE
    /* Need to load ENGINEs */
    ENGINE_load_builtin_engines();
#endif
    ERR_clear_error();
#ifndef OPENSSL_SYS_UEFI
    CONF_modules_load_file(NULL, appname,
                               CONF_MFLAGS_DEFAULT_SECTION |
                               CONF_MFLAGS_IGNORE_MISSING_FILE);
#endif
    openssl_configured = 1;
}

void openssl_no_config_int(void)
{
    openssl_configured = 1;
}