1 /* $OpenBSD: conf_sap.c,v 1.15 2023/11/19 15:46:09 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 /* This is the automatic configuration loader: it is called automatically by 71 * OpenSSL when any of a number of standard initialisation functions are called, 72 * unless this is overridden by calling OPENSSL_no_config() 73 */ 74 75 static pthread_once_t openssl_configured = PTHREAD_ONCE_INIT; 76 77 static const char *openssl_config_name; 78 79 static void 80 OPENSSL_config_internal(void) 81 { 82 OPENSSL_load_builtin_modules(); 83 /* Add others here? */ 84 85 ERR_clear_error(); 86 if (CONF_modules_load_file(NULL, openssl_config_name, 87 CONF_MFLAGS_DEFAULT_SECTION|CONF_MFLAGS_IGNORE_MISSING_FILE) <= 0) { 88 BIO *bio_err; 89 ERR_load_crypto_strings(); 90 if ((bio_err = BIO_new_fp(stderr, BIO_NOCLOSE)) != NULL) { 91 BIO_printf(bio_err, "Auto configuration failed\n"); 92 ERR_print_errors(bio_err); 93 BIO_free(bio_err); 94 } 95 exit(1); 96 } 97 98 return; 99 } 100 101 int 102 OpenSSL_config(const char *config_name) 103 { 104 /* Don't override if NULL */ 105 /* 106 * Note - multiple threads calling this with *different* config names 107 * is probably not advisable. One thread will win, but you don't know 108 * if it will be the same thread as wins the pthread_once. 109 */ 110 if (config_name != NULL) 111 openssl_config_name = config_name; 112 113 if (OPENSSL_init_crypto(0, NULL) == 0) 114 return 0; 115 116 if (pthread_once(&openssl_configured, OPENSSL_config_internal) != 0) 117 return 0; 118 119 return 1; 120 } 121 122 void 123 OPENSSL_config(const char *config_name) 124 { 125 (void) OpenSSL_config(config_name); 126 } 127 128 static void 129 OPENSSL_no_config_internal(void) 130 { 131 } 132 133 int 134 OpenSSL_no_config(void) 135 { 136 if (pthread_once(&openssl_configured, OPENSSL_no_config_internal) != 0) 137 return 0; 138 139 return 1; 140 } 141 142 void 143 OPENSSL_no_config(void) 144 { 145 (void) OpenSSL_no_config(); 146 } 147