1 /* $OpenBSD: conf_api.c,v 1.16 2023/07/08 08:26:26 beck 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 static void value_free_hash_doall_arg(CONF_VALUE *a, 73 LHASH_OF(CONF_VALUE) *conf); 74 static void value_free_stack_doall(CONF_VALUE *a); 75 static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE, 76 LHASH_OF(CONF_VALUE)) 77 static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE) 78 79 /* Up until OpenSSL 0.9.5a, this was get_section */ 80 CONF_VALUE * 81 _CONF_get_section(const CONF *conf, const char *section) 82 { 83 CONF_VALUE *v, vv; 84 85 if ((conf == NULL) || (section == NULL)) 86 return (NULL); 87 vv.name = NULL; 88 vv.section = (char *)section; 89 v = lh_CONF_VALUE_retrieve(conf->data, &vv); 90 return (v); 91 } 92 LCRYPTO_ALIAS(_CONF_get_section); 93 94 /* Up until OpenSSL 0.9.5a, this was CONF_get_section */ 95 STACK_OF(CONF_VALUE) * 96 _CONF_get_section_values(const CONF *conf, const char *section) 97 { 98 CONF_VALUE *v; 99 100 v = _CONF_get_section(conf, section); 101 if (v != NULL) 102 return ((STACK_OF(CONF_VALUE) *)v->value); 103 else 104 return (NULL); 105 } 106 LCRYPTO_ALIAS(_CONF_get_section_values); 107 108 int 109 _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value) 110 { 111 CONF_VALUE *v = NULL; 112 STACK_OF(CONF_VALUE) *ts; 113 114 ts = (STACK_OF(CONF_VALUE) *)section->value; 115 116 value->section = section->section; 117 if (!sk_CONF_VALUE_push(ts, value)) { 118 return 0; 119 } 120 121 v = lh_CONF_VALUE_insert(conf->data, value); 122 if (v != NULL) { 123 (void)sk_CONF_VALUE_delete_ptr(ts, v); 124 free(v->name); 125 free(v->value); 126 free(v); 127 } 128 return 1; 129 } 130 LCRYPTO_ALIAS(_CONF_add_string); 131 132 char * 133 _CONF_get_string(const CONF *conf, const char *section, const char *name) 134 { 135 CONF_VALUE *v, vv; 136 137 if (name == NULL) 138 return (NULL); 139 if (conf != NULL) { 140 if (section != NULL) { 141 vv.name = (char *)name; 142 vv.section = (char *)section; 143 v = lh_CONF_VALUE_retrieve(conf->data, &vv); 144 if (v != NULL) 145 return (v->value); 146 } 147 vv.section = "default"; 148 vv.name = (char *)name; 149 v = lh_CONF_VALUE_retrieve(conf->data, &vv); 150 if (v != NULL) 151 return (v->value); 152 else 153 return (NULL); 154 } else 155 return (NULL); 156 } 157 LCRYPTO_ALIAS(_CONF_get_string); 158 159 static unsigned long 160 conf_value_hash(const CONF_VALUE *v) 161 { 162 return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name); 163 } 164 165 static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE) 166 167 static int 168 conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b) 169 { 170 int i; 171 172 if (a->section != b->section) { 173 i = strcmp(a->section, b->section); 174 if (i) 175 return (i); 176 } 177 if ((a->name != NULL) && (b->name != NULL)) { 178 i = strcmp(a->name, b->name); 179 return (i); 180 } else if (a->name == b->name) 181 return (0); 182 else 183 return ((a->name == NULL)?-1 : 1); 184 } 185 186 static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE) 187 188 int 189 _CONF_new_data(CONF *conf) 190 { 191 if (conf == NULL) { 192 return 0; 193 } 194 if (conf->data == NULL) 195 if ((conf->data = lh_CONF_VALUE_new()) == NULL) { 196 return 0; 197 } 198 return 1; 199 } 200 LCRYPTO_ALIAS(_CONF_new_data); 201 202 void 203 _CONF_free_data(CONF *conf) 204 { 205 if (conf == NULL || conf->data == NULL) 206 return; 207 208 lh_CONF_VALUE_down_load(conf->data) = 0; /* evil thing to make 209 * sure the 'free()' works as 210 * expected */ 211 lh_CONF_VALUE_doall_arg(conf->data, 212 LHASH_DOALL_ARG_FN(value_free_hash), 213 LHASH_OF(CONF_VALUE), conf->data); 214 215 /* We now have only 'section' entries in the hash table. 216 * Due to problems with */ 217 218 lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack)); 219 lh_CONF_VALUE_free(conf->data); 220 } 221 LCRYPTO_ALIAS(_CONF_free_data); 222 223 static void 224 value_free_hash_doall_arg(CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf) 225 { 226 if (a->name != NULL) 227 (void)lh_CONF_VALUE_delete(conf, a); 228 } 229 230 static void 231 value_free_stack_doall(CONF_VALUE *a) 232 { 233 CONF_VALUE *vv; 234 STACK_OF(CONF_VALUE) *sk; 235 int i; 236 237 if (a->name != NULL) 238 return; 239 240 sk = (STACK_OF(CONF_VALUE) *)a->value; 241 for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) { 242 vv = sk_CONF_VALUE_value(sk, i); 243 free(vv->value); 244 free(vv->name); 245 free(vv); 246 } 247 if (sk != NULL) 248 sk_CONF_VALUE_free(sk); 249 free(a->section); 250 free(a); 251 } 252 253 /* Up until OpenSSL 0.9.5a, this was new_section */ 254 CONF_VALUE * 255 _CONF_new_section(CONF *conf, const char *section) 256 { 257 STACK_OF(CONF_VALUE) *sk = NULL; 258 int ok = 0, i; 259 CONF_VALUE *v = NULL, *vv; 260 261 if ((sk = sk_CONF_VALUE_new_null()) == NULL) 262 goto err; 263 if ((v = malloc(sizeof(CONF_VALUE))) == NULL) 264 goto err; 265 i = strlen(section) + 1; 266 if ((v->section = malloc(i)) == NULL) 267 goto err; 268 269 memcpy(v->section, section, i); 270 v->name = NULL; 271 v->value = (char *)sk; 272 273 vv = lh_CONF_VALUE_insert(conf->data, v); 274 OPENSSL_assert(vv == NULL); 275 ok = 1; 276 277 err: 278 if (!ok) { 279 if (sk != NULL) 280 sk_CONF_VALUE_free(sk); 281 free(v); 282 v = NULL; 283 } 284 return (v); 285 } 286 LCRYPTO_ALIAS(_CONF_new_section); 287