1 /* $OpenBSD: conf_lib.c,v 1.24 2024/08/31 09:50:52 tb Exp $ */ 2 /* Written by Richard Levitte (richard@levitte.org) for the OpenSSL 3 * project 2000. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2000 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 <stdio.h> 60 #include <openssl/crypto.h> 61 #include <openssl/err.h> 62 #include <openssl/conf.h> 63 #include <openssl/lhash.h> 64 65 #include "conf_local.h" 66 67 static const CONF_METHOD *default_CONF_method = NULL; 68 69 /* Init a 'CONF' structure from an old LHASH */ 70 71 void 72 CONF_set_nconf(CONF *conf, LHASH_OF(CONF_VALUE) *hash) 73 { 74 if (default_CONF_method == NULL) 75 default_CONF_method = NCONF_default(); 76 default_CONF_method->init(conf); 77 conf->data = hash; 78 } 79 80 CONF * 81 NCONF_new(const CONF_METHOD *meth) 82 { 83 CONF *ret; 84 85 if (meth == NULL) 86 meth = NCONF_default(); 87 88 ret = meth->create(meth); 89 if (ret == NULL) { 90 CONFerror(ERR_R_MALLOC_FAILURE); 91 return (NULL); 92 } 93 94 return ret; 95 } 96 LCRYPTO_ALIAS(NCONF_new); 97 98 void 99 NCONF_free(CONF *conf) 100 { 101 if (conf == NULL) 102 return; 103 conf->meth->destroy(conf); 104 } 105 LCRYPTO_ALIAS(NCONF_free); 106 107 int 108 NCONF_load(CONF *conf, const char *file, long *eline) 109 { 110 if (conf == NULL) { 111 CONFerror(CONF_R_NO_CONF); 112 return 0; 113 } 114 115 return conf->meth->load(conf, file, eline); 116 } 117 LCRYPTO_ALIAS(NCONF_load); 118 119 int 120 NCONF_load_bio(CONF *conf, BIO *bp, long *eline) 121 { 122 if (conf == NULL) { 123 CONFerror(CONF_R_NO_CONF); 124 return 0; 125 } 126 127 return conf->meth->load_bio(conf, bp, eline); 128 } 129 LCRYPTO_ALIAS(NCONF_load_bio); 130 131 STACK_OF(CONF_VALUE) * 132 NCONF_get_section(const CONF *conf, const char *section) 133 { 134 if (conf == NULL) { 135 CONFerror(CONF_R_NO_CONF); 136 return NULL; 137 } 138 139 if (section == NULL) { 140 CONFerror(CONF_R_NO_SECTION); 141 return NULL; 142 } 143 144 return _CONF_get_section_values(conf, section); 145 } 146 LCRYPTO_ALIAS(NCONF_get_section); 147 148 char * 149 NCONF_get_string(const CONF *conf, const char *group, const char *name) 150 { 151 char *s = _CONF_get_string(conf, group, name); 152 153 /* Since we may get a value from an environment variable even 154 if conf is NULL, let's check the value first */ 155 if (s) 156 return s; 157 158 if (conf == NULL) { 159 CONFerror(CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE); 160 return NULL; 161 } 162 CONFerror(CONF_R_NO_VALUE); 163 ERR_asprintf_error_data("group=%s name=%s", 164 group ? group : "", name); 165 return NULL; 166 } 167 LCRYPTO_ALIAS(NCONF_get_string); 168 169 int 170 NCONF_get_number_e(const CONF *conf, const char *group, const char *name, 171 long *result) 172 { 173 char *str; 174 175 if (result == NULL) { 176 CONFerror(ERR_R_PASSED_NULL_PARAMETER); 177 return 0; 178 } 179 180 str = NCONF_get_string(conf, group, name); 181 182 if (str == NULL) 183 return 0; 184 185 for (*result = 0; conf->meth->is_number(conf, *str); ) { 186 *result = (*result) * 10 + conf->meth->to_int(conf, *str); 187 str++; 188 } 189 190 return 1; 191 } 192 LCRYPTO_ALIAS(NCONF_get_number_e); 193