1 /* $OpenBSD: conf_sap.c,v 1.14 2018/03/19 03:56:08 beck 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 #ifndef OPENSSL_NO_ENGINE
71 #include <openssl/engine.h>
72 #endif
73
74 /* This is the automatic configuration loader: it is called automatically by
75 * OpenSSL when any of a number of standard initialisation functions are called,
76 * unless this is overridden by calling OPENSSL_no_config()
77 */
78
79 static pthread_once_t openssl_configured = PTHREAD_ONCE_INIT;
80
81 static const char *openssl_config_name;
82
83 static void
OPENSSL_config_internal(void)84 OPENSSL_config_internal(void)
85 {
86 OPENSSL_load_builtin_modules();
87 #ifndef OPENSSL_NO_ENGINE
88 /* Need to load ENGINEs */
89 ENGINE_load_builtin_engines();
90 #endif
91 /* Add others here? */
92
93 ERR_clear_error();
94 if (CONF_modules_load_file(NULL, openssl_config_name,
95 CONF_MFLAGS_DEFAULT_SECTION|CONF_MFLAGS_IGNORE_MISSING_FILE) <= 0) {
96 BIO *bio_err;
97 ERR_load_crypto_strings();
98 if ((bio_err = BIO_new_fp(stderr, BIO_NOCLOSE)) != NULL) {
99 BIO_printf(bio_err, "Auto configuration failed\n");
100 ERR_print_errors(bio_err);
101 BIO_free(bio_err);
102 }
103 exit(1);
104 }
105
106 return;
107 }
108
109 int
OpenSSL_config(const char * config_name)110 OpenSSL_config(const char *config_name)
111 {
112 /* Don't override if NULL */
113 /*
114 * Note - multiple threads calling this with *different* config names
115 * is probably not advisable. One thread will win, but you don't know
116 * if it will be the same thread as wins the pthread_once.
117 */
118 if (config_name != NULL)
119 openssl_config_name = config_name;
120
121 if (OPENSSL_init_crypto(0, NULL) == 0)
122 return 0;
123
124 if (pthread_once(&openssl_configured, OPENSSL_config_internal) != 0)
125 return 0;
126
127 return 1;
128 }
129
130 void
OPENSSL_config(const char * config_name)131 OPENSSL_config(const char *config_name)
132 {
133 (void) OpenSSL_config(config_name);
134 }
135
136 static void
OPENSSL_no_config_internal(void)137 OPENSSL_no_config_internal(void)
138 {
139 }
140
141 int
OpenSSL_no_config(void)142 OpenSSL_no_config(void)
143 {
144 if (pthread_once(&openssl_configured, OPENSSL_no_config_internal) != 0)
145 return 0;
146
147 return 1;
148 }
149
150 void
OPENSSL_no_config(void)151 OPENSSL_no_config(void)
152 {
153 (void) OpenSSL_no_config();
154 }
155