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 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 93 /* Up until OpenSSL 0.9.5a, this was CONF_get_section */ 94 STACK_OF(CONF_VALUE) * 95 _CONF_get_section_values(const CONF *conf, 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 } 105 106 int 107 _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value) 108 { 109 CONF_VALUE *v = NULL; 110 STACK_OF(CONF_VALUE) *ts; 111 112 ts = (STACK_OF(CONF_VALUE) *)section->value; 113 114 value->section = section->section; 115 if (!sk_CONF_VALUE_push(ts, value)) { 116 return 0; 117 } 118 119 v = lh_CONF_VALUE_insert(conf->data, value); 120 if (v != NULL) { 121 (void)sk_CONF_VALUE_delete_ptr(ts, v); 122 free(v->name); 123 free(v->value); 124 free(v); 125 } 126 return 1; 127 } 128 129 char * 130 _CONF_get_string(const CONF *conf, const char *section, const char *name) 131 { 132 CONF_VALUE *v, vv; 133 char *p; 134 135 if (name == NULL) 136 return (NULL); 137 if (conf != NULL) { 138 if (section != NULL) { 139 vv.name = (char *)name; 140 vv.section = (char *)section; 141 v = lh_CONF_VALUE_retrieve(conf->data, &vv); 142 if (v != NULL) 143 return (v->value); 144 if (strcmp(section, "ENV") == 0) { 145 p = getenv(name); 146 if (p != NULL) 147 return (p); 148 } 149 } 150 vv.section = "default"; 151 vv.name = (char *)name; 152 v = lh_CONF_VALUE_retrieve(conf->data, &vv); 153 if (v != NULL) 154 return (v->value); 155 else 156 return (NULL); 157 } else 158 return (getenv(name)); 159 } 160 161 #if 0 /* There's no way to provide error checking with this function, so 162 force implementors of the higher levels to get a string and read 163 the number themselves. */ 164 long 165 _CONF_get_number(CONF *conf, char *section, char *name) 166 { 167 char *str; 168 long ret = 0; 169 170 str = _CONF_get_string(conf, section, name); 171 if (str == NULL) 172 return (0); 173 for (;;) { 174 if (conf->meth->is_number(conf, *str)) 175 ret = ret * 10 + conf->meth->to_int(conf, *str); 176 else 177 return (ret); 178 str++; 179 } 180 } 181 #endif 182 183 static unsigned long 184 conf_value_hash(const CONF_VALUE *v) 185 { 186 return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name); 187 } 188 189 static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE) 190 191 static int 192 conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b) 193 { 194 int i; 195 196 if (a->section != b->section) { 197 i = strcmp(a->section, b->section); 198 if (i) 199 return (i); 200 } 201 if ((a->name != NULL) && (b->name != NULL)) { 202 i = strcmp(a->name, b->name); 203 return (i); 204 } else if (a->name == b->name) 205 return (0); 206 else 207 return ((a->name == NULL)?-1 : 1); 208 } 209 210 static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE) 211 212 int 213 _CONF_new_data(CONF *conf) 214 { 215 if (conf == NULL) { 216 return 0; 217 } 218 if (conf->data == NULL) 219 if ((conf->data = lh_CONF_VALUE_new()) == NULL) { 220 return 0; 221 } 222 return 1; 223 } 224 225 void 226 _CONF_free_data(CONF *conf) 227 { 228 if (conf == NULL || conf->data == NULL) 229 return; 230 231 lh_CONF_VALUE_down_load(conf->data) = 0; /* evil thing to make 232 * sure the 'free()' works as 233 * expected */ 234 lh_CONF_VALUE_doall_arg(conf->data, 235 LHASH_DOALL_ARG_FN(value_free_hash), 236 LHASH_OF(CONF_VALUE), conf->data); 237 238 /* We now have only 'section' entries in the hash table. 239 * Due to problems with */ 240 241 lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack)); 242 lh_CONF_VALUE_free(conf->data); 243 } 244 245 static void 246 value_free_hash_doall_arg(CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf) 247 { 248 if (a->name != NULL) 249 (void)lh_CONF_VALUE_delete(conf, a); 250 } 251 252 static void 253 value_free_stack_doall(CONF_VALUE *a) 254 { 255 CONF_VALUE *vv; 256 STACK_OF(CONF_VALUE) *sk; 257 int i; 258 259 if (a->name != NULL) 260 return; 261 262 sk = (STACK_OF(CONF_VALUE) *)a->value; 263 for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) { 264 vv = sk_CONF_VALUE_value(sk, i); 265 free(vv->value); 266 free(vv->name); 267 free(vv); 268 } 269 if (sk != NULL) 270 sk_CONF_VALUE_free(sk); 271 free(a->section); 272 free(a); 273 } 274 275 /* Up until OpenSSL 0.9.5a, this was new_section */ 276 CONF_VALUE * 277 _CONF_new_section(CONF *conf, const char *section) 278 { 279 STACK_OF(CONF_VALUE) *sk = NULL; 280 int ok = 0, i; 281 CONF_VALUE *v = NULL, *vv; 282 283 if ((sk = sk_CONF_VALUE_new_null()) == NULL) 284 goto err; 285 if ((v = malloc(sizeof(CONF_VALUE))) == NULL) 286 goto err; 287 i = strlen(section) + 1; 288 if ((v->section = malloc(i)) == NULL) 289 goto err; 290 291 memcpy(v->section, section, i); 292 v->name = NULL; 293 v->value = (char *)sk; 294 295 vv = lh_CONF_VALUE_insert(conf->data, v); 296 OPENSSL_assert(vv == NULL); 297 ok = 1; 298 299 err: 300 if (!ok) { 301 if (sk != NULL) 302 sk_CONF_VALUE_free(sk); 303 if (v != NULL) 304 free(v); 305 v = NULL; 306 } 307 return (v); 308 } 309 310 IMPLEMENT_STACK_OF(CONF_VALUE) 311