1/*
2 * Copyright 2002-2019 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include <openssl/crypto.h>
12#include "internal/cryptlib.h"
13#include "internal/conf.h"
14#include <openssl/x509.h>
15#include <openssl/asn1.h>
16#include <openssl/engine.h>
17
18#ifdef _WIN32
19# define strdup _strdup
20#endif
21
22/*
23 * This is the automatic configuration loader: it is called automatically by
24 * OpenSSL when any of a number of standard initialisation functions are
25 * called, unless this is overridden by calling OPENSSL_no_config()
26 */
27
28static int openssl_configured = 0;
29
30#if OPENSSL_API_COMPAT < 0x10100000L
31void OPENSSL_config(const char *appname)
32{
33    OPENSSL_INIT_SETTINGS settings;
34
35    memset(&settings, 0, sizeof(settings));
36    if (appname != NULL)
37        settings.appname = strdup(appname);
38    settings.flags = DEFAULT_CONF_MFLAGS;
39    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, &settings);
40}
41#endif
42
43int openssl_config_int(const OPENSSL_INIT_SETTINGS *settings)
44{
45    int ret = 0;
46    const char *filename;
47    const char *appname;
48    unsigned long flags;
49
50    if (openssl_configured)
51        return 1;
52
53    filename = settings ? settings->filename : NULL;
54    appname = settings ? settings->appname : NULL;
55    flags = settings ? settings->flags : DEFAULT_CONF_MFLAGS;
56
57#ifdef OPENSSL_INIT_DEBUG
58    fprintf(stderr, "OPENSSL_INIT: openssl_config_int(%s, %s, %lu)\n",
59            filename, appname, flags);
60#endif
61
62    OPENSSL_load_builtin_modules();
63#ifndef OPENSSL_NO_ENGINE
64    /* Need to load ENGINEs */
65    ENGINE_load_builtin_engines();
66#endif
67    ERR_clear_error();
68#ifndef OPENSSL_SYS_UEFI
69    ret = CONF_modules_load_file(filename, appname, flags);
70#endif
71    openssl_configured = 1;
72    return ret;
73}
74
75void openssl_no_config_int(void)
76{
77    openssl_configured = 1;
78}
79