1/* conf_api.c */ 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 <assert.h> 67#include <stdlib.h> 68#include <string.h> 69#include <openssl/conf.h> 70#include <openssl/conf_api.h> 71#include "e_os.h" 72 73static void value_free_hash_doall_arg(CONF_VALUE *a, 74 LHASH_OF(CONF_VALUE) *conf); 75static void value_free_stack_doall(CONF_VALUE *a); 76static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE, 77 LHASH_OF(CONF_VALUE)) 78static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE) 79 80/* Up until OpenSSL 0.9.5a, this was get_section */ 81CONF_VALUE *_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 93/* Up until OpenSSL 0.9.5a, this was CONF_get_section */ 94STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf, 95 const char *section) 96{ 97 CONF_VALUE *v; 98 99 v = _CONF_get_section(conf, section); 100 if (v != NULL) 101 return ((STACK_OF(CONF_VALUE) *)v->value); 102 else 103 return (NULL); 104} 105 106int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value) 107{ 108 CONF_VALUE *v = NULL; 109 STACK_OF(CONF_VALUE) *ts; 110 111 ts = (STACK_OF(CONF_VALUE) *)section->value; 112 113 value->section = section->section; 114 if (!sk_CONF_VALUE_push(ts, value)) { 115 return 0; 116 } 117 118 v = lh_CONF_VALUE_insert(conf->data, value); 119 if (v != NULL) { 120 (void)sk_CONF_VALUE_delete_ptr(ts, v); 121 OPENSSL_free(v->name); 122 OPENSSL_free(v->value); 123 OPENSSL_free(v); 124 } 125 return 1; 126} 127 128char *_CONF_get_string(const CONF *conf, const char *section, 129 const char *name) 130{ 131 CONF_VALUE *v, vv; 132 char *p; 133 134 if (name == NULL) 135 return (NULL); 136 if (conf != NULL) { 137 if (section != NULL) { 138 vv.name = (char *)name; 139 vv.section = (char *)section; 140 v = lh_CONF_VALUE_retrieve(conf->data, &vv); 141 if (v != NULL) 142 return (v->value); 143 if (strcmp(section, "ENV") == 0) { 144 p = getenv(name); 145 if (p != NULL) 146 return (p); 147 } 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 (getenv(name)); 158} 159 160#if 0 /* There's no way to provide error checking 161 * with this function, so force implementors 162 * of the higher levels to get a string and 163 * read the number themselves. */ 164long _CONF_get_number(CONF *conf, char *section, char *name) 165{ 166 char *str; 167 long ret = 0; 168 169 str = _CONF_get_string(conf, section, name); 170 if (str == NULL) 171 return (0); 172 for (;;) { 173 if (conf->meth->is_number(conf, *str)) 174 ret = ret * 10 + conf->meth->to_int(conf, *str); 175 else 176 return (ret); 177 str++; 178 } 179} 180#endif 181 182static unsigned long conf_value_hash(const CONF_VALUE *v) 183{ 184 return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name); 185} 186 187static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE) 188 189static int conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b) 190{ 191 int i; 192 193 if (a->section != b->section) { 194 i = strcmp(a->section, b->section); 195 if (i) 196 return (i); 197 } 198 199 if ((a->name != NULL) && (b->name != NULL)) { 200 i = strcmp(a->name, b->name); 201 return (i); 202 } else if (a->name == b->name) 203 return (0); 204 else 205 return ((a->name == NULL) ? -1 : 1); 206} 207 208static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE) 209 210int _CONF_new_data(CONF *conf) 211{ 212 if (conf == NULL) { 213 return 0; 214 } 215 if (conf->data == NULL) 216 if ((conf->data = lh_CONF_VALUE_new()) == NULL) { 217 return 0; 218 } 219 return 1; 220} 221 222void _CONF_free_data(CONF *conf) 223{ 224 if (conf == NULL || conf->data == NULL) 225 return; 226 227 lh_CONF_VALUE_down_load(conf->data) = 0; /* evil thing to make * sure the 228 * 'OPENSSL_free()' works as * 229 * expected */ 230 lh_CONF_VALUE_doall_arg(conf->data, 231 LHASH_DOALL_ARG_FN(value_free_hash), 232 LHASH_OF(CONF_VALUE), conf->data); 233 234 /* 235 * We now have only 'section' entries in the hash table. Due to problems 236 * with 237 */ 238 239 lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack)); 240 lh_CONF_VALUE_free(conf->data); 241} 242 243static void value_free_hash_doall_arg(CONF_VALUE *a, 244 LHASH_OF(CONF_VALUE) *conf) 245{ 246 if (a->name != NULL) 247 (void)lh_CONF_VALUE_delete(conf, a); 248} 249 250static void value_free_stack_doall(CONF_VALUE *a) 251{ 252 CONF_VALUE *vv; 253 STACK_OF(CONF_VALUE) *sk; 254 int i; 255 256 if (a->name != NULL) 257 return; 258 259 sk = (STACK_OF(CONF_VALUE) *)a->value; 260 for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) { 261 vv = sk_CONF_VALUE_value(sk, i); 262 OPENSSL_free(vv->value); 263 OPENSSL_free(vv->name); 264 OPENSSL_free(vv); 265 } 266 if (sk != NULL) 267 sk_CONF_VALUE_free(sk); 268 OPENSSL_free(a->section); 269 OPENSSL_free(a); 270} 271 272/* Up until OpenSSL 0.9.5a, this was new_section */ 273CONF_VALUE *_CONF_new_section(CONF *conf, const char *section) 274{ 275 STACK_OF(CONF_VALUE) *sk = NULL; 276 int ok = 0, i; 277 CONF_VALUE *v = NULL, *vv; 278 279 if ((sk = sk_CONF_VALUE_new_null()) == NULL) 280 goto err; 281 if ((v = OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL) 282 goto err; 283 i = strlen(section) + 1; 284 if ((v->section = OPENSSL_malloc(i)) == NULL) 285 goto err; 286 287 memcpy(v->section, section, i); 288 v->name = NULL; 289 v->value = (char *)sk; 290 291 vv = lh_CONF_VALUE_insert(conf->data, v); 292 OPENSSL_assert(vv == NULL); 293 ok = 1; 294 err: 295 if (!ok) { 296 if (sk != NULL) 297 sk_CONF_VALUE_free(sk); 298 if (v != NULL) 299 OPENSSL_free(v); 300 v = NULL; 301 } 302 return (v); 303} 304 305IMPLEMENT_STACK_OF(CONF_VALUE) 306