1 /* $OpenBSD: conf_sap.c,v 1.18 2024/10/18 11:12:10 tb Exp $ */
2 /* Written by Stephen Henson (steve@openssl.org) for the OpenSSL
3 * project 2001.
4 */
5 /* ====================================================================
6 * Copyright (c) 2001 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59 #include <pthread.h>
60 #include <stdio.h>
61
62 #include <openssl/opensslconf.h>
63
64 #include <openssl/asn1.h>
65 #include <openssl/conf.h>
66 #include <openssl/crypto.h>
67 #include <openssl/err.h>
68 #include <openssl/x509.h>
69
70 #include "conf_local.h"
71
72 /* This is the automatic configuration loader: it is called automatically by
73 * OpenSSL when any of a number of standard initialisation functions are called,
74 * unless this is overridden by calling OPENSSL_no_config()
75 */
76
77 static pthread_once_t openssl_configured = PTHREAD_ONCE_INIT;
78
79 static const char *openssl_config_name;
80
81 void ASN1_add_oid_module(void);
82
83 static void
OPENSSL_config_internal(void)84 OPENSSL_config_internal(void)
85 {
86 ASN1_add_oid_module();
87
88 ERR_clear_error();
89 if (CONF_modules_load_file(NULL, openssl_config_name,
90 CONF_MFLAGS_DEFAULT_SECTION|CONF_MFLAGS_IGNORE_MISSING_FILE) <= 0) {
91 BIO *bio_err;
92 ERR_load_crypto_strings();
93 if ((bio_err = BIO_new_fp(stderr, BIO_NOCLOSE)) != NULL) {
94 BIO_printf(bio_err, "Auto configuration failed\n");
95 ERR_print_errors(bio_err);
96 BIO_free(bio_err);
97 }
98 exit(1);
99 }
100
101 return;
102 }
103
104 int
OpenSSL_config(const char * config_name)105 OpenSSL_config(const char *config_name)
106 {
107 /* Don't override if NULL */
108 /*
109 * Note - multiple threads calling this with *different* config names
110 * is probably not advisable. One thread will win, but you don't know
111 * if it will be the same thread as wins the pthread_once.
112 */
113 if (config_name != NULL)
114 openssl_config_name = config_name;
115
116 if (OPENSSL_init_crypto(0, NULL) == 0)
117 return 0;
118
119 if (pthread_once(&openssl_configured, OPENSSL_config_internal) != 0)
120 return 0;
121
122 return 1;
123 }
124
125 void
OPENSSL_config(const char * config_name)126 OPENSSL_config(const char *config_name)
127 {
128 (void) OpenSSL_config(config_name);
129 }
130 LCRYPTO_ALIAS(OPENSSL_config);
131
132 static void
OPENSSL_no_config_internal(void)133 OPENSSL_no_config_internal(void)
134 {
135 }
136
137 int
OpenSSL_no_config(void)138 OpenSSL_no_config(void)
139 {
140 if (pthread_once(&openssl_configured, OPENSSL_no_config_internal) != 0)
141 return 0;
142
143 return 1;
144 }
145
146 void
OPENSSL_no_config(void)147 OPENSSL_no_config(void)
148 {
149 (void) OpenSSL_no_config();
150 }
151 LCRYPTO_ALIAS(OPENSSL_no_config);
152