1 /* $OpenBSD: conf_api.c,v 1.18 2024/03/02 11:11:11 tb Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 /* Part of the code in here was originally in conf.c, which is now removed */ 60 61 #ifndef CONF_DEBUG 62 # undef NDEBUG /* avoid conflicting definitions */ 63 # define NDEBUG 64 #endif 65 66 #include <stdlib.h> 67 #include <string.h> 68 #include <unistd.h> 69 #include <openssl/conf.h> 70 #include <openssl/conf_api.h> 71 72 #include "lhash_local.h" 73 74 static void value_free_hash_doall_arg(CONF_VALUE *a, 75 LHASH_OF(CONF_VALUE) *conf); 76 static void value_free_stack_doall(CONF_VALUE *a); 77 static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE, 78 LHASH_OF(CONF_VALUE)) 79 static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE) 80 81 /* Up until OpenSSL 0.9.5a, this was get_section */ 82 CONF_VALUE * 83 _CONF_get_section(const CONF *conf, const char *section) 84 { 85 CONF_VALUE *v, vv; 86 87 if ((conf == NULL) || (section == NULL)) 88 return (NULL); 89 vv.name = NULL; 90 vv.section = (char *)section; 91 v = lh_CONF_VALUE_retrieve(conf->data, &vv); 92 return (v); 93 } 94 LCRYPTO_ALIAS(_CONF_get_section); 95 96 /* Up until OpenSSL 0.9.5a, this was CONF_get_section */ 97 STACK_OF(CONF_VALUE) * 98 _CONF_get_section_values(const CONF *conf, const char *section) 99 { 100 CONF_VALUE *v; 101 102 v = _CONF_get_section(conf, section); 103 if (v != NULL) 104 return ((STACK_OF(CONF_VALUE) *)v->value); 105 else 106 return (NULL); 107 } 108 LCRYPTO_ALIAS(_CONF_get_section_values); 109 110 int 111 _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value) 112 { 113 CONF_VALUE *v = NULL; 114 STACK_OF(CONF_VALUE) *ts; 115 116 ts = (STACK_OF(CONF_VALUE) *)section->value; 117 118 value->section = section->section; 119 if (!sk_CONF_VALUE_push(ts, value)) { 120 return 0; 121 } 122 123 v = lh_CONF_VALUE_insert(conf->data, value); 124 if (v != NULL) { 125 (void)sk_CONF_VALUE_delete_ptr(ts, v); 126 free(v->name); 127 free(v->value); 128 free(v); 129 } 130 return 1; 131 } 132 LCRYPTO_ALIAS(_CONF_add_string); 133 134 char * 135 _CONF_get_string(const CONF *conf, const char *section, const char *name) 136 { 137 CONF_VALUE *v, vv; 138 139 if (name == NULL) 140 return (NULL); 141 if (conf != NULL) { 142 if (section != NULL) { 143 vv.name = (char *)name; 144 vv.section = (char *)section; 145 v = lh_CONF_VALUE_retrieve(conf->data, &vv); 146 if (v != NULL) 147 return (v->value); 148 } 149 vv.section = "default"; 150 vv.name = (char *)name; 151 v = lh_CONF_VALUE_retrieve(conf->data, &vv); 152 if (v != NULL) 153 return (v->value); 154 else 155 return (NULL); 156 } else 157 return (NULL); 158 } 159 LCRYPTO_ALIAS(_CONF_get_string); 160 161 static unsigned long 162 conf_value_hash(const CONF_VALUE *v) 163 { 164 return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name); 165 } 166 167 static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE) 168 169 static int 170 conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b) 171 { 172 int i; 173 174 if (a->section != b->section) { 175 i = strcmp(a->section, b->section); 176 if (i) 177 return (i); 178 } 179 if ((a->name != NULL) && (b->name != NULL)) { 180 i = strcmp(a->name, b->name); 181 return (i); 182 } else if (a->name == b->name) 183 return (0); 184 else 185 return ((a->name == NULL)?-1 : 1); 186 } 187 188 static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE) 189 190 int 191 _CONF_new_data(CONF *conf) 192 { 193 if (conf == NULL) { 194 return 0; 195 } 196 if (conf->data == NULL) 197 if ((conf->data = lh_CONF_VALUE_new()) == NULL) { 198 return 0; 199 } 200 return 1; 201 } 202 LCRYPTO_ALIAS(_CONF_new_data); 203 204 void 205 _CONF_free_data(CONF *conf) 206 { 207 if (conf == NULL || conf->data == NULL) 208 return; 209 210 lh_CONF_VALUE_doall_arg(conf->data, 211 LHASH_DOALL_ARG_FN(value_free_hash), 212 LHASH_OF(CONF_VALUE), conf->data); 213 214 /* We now have only 'section' entries in the hash table. 215 * Due to problems with */ 216 217 lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack)); 218 lh_CONF_VALUE_free(conf->data); 219 } 220 LCRYPTO_ALIAS(_CONF_free_data); 221 222 static void 223 value_free_hash_doall_arg(CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf) 224 { 225 if (a->name != NULL) 226 (void)lh_CONF_VALUE_delete(conf, a); 227 } 228 229 static void 230 value_free_stack_doall(CONF_VALUE *a) 231 { 232 CONF_VALUE *vv; 233 STACK_OF(CONF_VALUE) *sk; 234 int i; 235 236 if (a->name != NULL) 237 return; 238 239 sk = (STACK_OF(CONF_VALUE) *)a->value; 240 for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) { 241 vv = sk_CONF_VALUE_value(sk, i); 242 free(vv->value); 243 free(vv->name); 244 free(vv); 245 } 246 if (sk != NULL) 247 sk_CONF_VALUE_free(sk); 248 free(a->section); 249 free(a); 250 } 251 252 /* Up until OpenSSL 0.9.5a, this was new_section */ 253 CONF_VALUE * 254 _CONF_new_section(CONF *conf, const char *section) 255 { 256 STACK_OF(CONF_VALUE) *sk = NULL; 257 int ok = 0, i; 258 CONF_VALUE *v = NULL, *vv; 259 260 if ((sk = sk_CONF_VALUE_new_null()) == NULL) 261 goto err; 262 if ((v = malloc(sizeof(CONF_VALUE))) == NULL) 263 goto err; 264 i = strlen(section) + 1; 265 if ((v->section = malloc(i)) == NULL) 266 goto err; 267 268 memcpy(v->section, section, i); 269 v->name = NULL; 270 v->value = (char *)sk; 271 272 vv = lh_CONF_VALUE_insert(conf->data, v); 273 OPENSSL_assert(vv == NULL); 274 ok = 1; 275 276 err: 277 if (!ok) { 278 if (sk != NULL) 279 sk_CONF_VALUE_free(sk); 280 free(v); 281 v = NULL; 282 } 283 return (v); 284 } 285 LCRYPTO_ALIAS(_CONF_new_section); 286