1/*
2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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#ifndef OPENSSL_NO_DEPRECATED_1_1_0
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