Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* conf_lib.c */ |
| 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/conf_api.h> |
| 64 | #include <openssl/lhash.h> |
| 65 | |
| 66 | const char CONF_version[]="CONF" OPENSSL_VERSION_PTEXT; |
| 67 | |
| 68 | static CONF_METHOD *default_CONF_method=NULL; |
| 69 | |
| 70 | /* Init a 'CONF' structure from an old LHASH */ |
| 71 | |
| 72 | void CONF_set_nconf(CONF *conf, LHASH_OF(CONF_VALUE) *hash) |
| 73 | { |
| 74 | if (default_CONF_method == NULL) |
| 75 | default_CONF_method = NCONF_default(); |
| 76 | |
| 77 | default_CONF_method->init(conf); |
| 78 | conf->data = hash; |
| 79 | } |
| 80 | |
| 81 | /* The following section contains the "CONF classic" functions, |
| 82 | rewritten in terms of the new CONF interface. */ |
| 83 | |
| 84 | int CONF_set_default_method(CONF_METHOD *meth) |
| 85 | { |
| 86 | default_CONF_method = meth; |
| 87 | return 1; |
| 88 | } |
| 89 | |
| 90 | LHASH_OF(CONF_VALUE) *CONF_load(LHASH_OF(CONF_VALUE) *conf, const char *file, |
| 91 | long *eline) |
| 92 | { |
| 93 | LHASH_OF(CONF_VALUE) *ltmp; |
| 94 | BIO *in=NULL; |
| 95 | |
| 96 | #ifdef OPENSSL_SYS_VMS |
| 97 | in=BIO_new_file(file, "r"); |
| 98 | #else |
| 99 | in=BIO_new_file(file, "rb"); |
| 100 | #endif |
| 101 | if (in == NULL) |
| 102 | { |
| 103 | CONFerr(CONF_F_CONF_LOAD,ERR_R_SYS_LIB); |
| 104 | return NULL; |
| 105 | } |
| 106 | |
| 107 | ltmp = CONF_load_bio(conf, in, eline); |
| 108 | BIO_free(in); |
| 109 | |
| 110 | return ltmp; |
| 111 | } |
| 112 | |
| 113 | #ifndef OPENSSL_NO_FP_API |
| 114 | LHASH_OF(CONF_VALUE) *CONF_load_fp(LHASH_OF(CONF_VALUE) *conf, FILE *fp, |
| 115 | long *eline) |
| 116 | { |
| 117 | BIO *btmp; |
| 118 | LHASH_OF(CONF_VALUE) *ltmp; |
| 119 | if(!(btmp = BIO_new_fp(fp, BIO_NOCLOSE))) { |
| 120 | CONFerr(CONF_F_CONF_LOAD_FP,ERR_R_BUF_LIB); |
| 121 | return NULL; |
| 122 | } |
| 123 | ltmp = CONF_load_bio(conf, btmp, eline); |
| 124 | BIO_free(btmp); |
| 125 | return ltmp; |
| 126 | } |
| 127 | #endif |
| 128 | |
| 129 | LHASH_OF(CONF_VALUE) *CONF_load_bio(LHASH_OF(CONF_VALUE) *conf, BIO *bp, |
| 130 | long *eline) |
| 131 | { |
| 132 | CONF ctmp; |
| 133 | int ret; |
| 134 | |
| 135 | CONF_set_nconf(&ctmp, conf); |
| 136 | |
| 137 | ret = NCONF_load_bio(&ctmp, bp, eline); |
| 138 | if (ret) |
| 139 | return ctmp.data; |
| 140 | return NULL; |
| 141 | } |
| 142 | |
| 143 | STACK_OF(CONF_VALUE) *CONF_get_section(LHASH_OF(CONF_VALUE) *conf, |
| 144 | const char *section) |
| 145 | { |
| 146 | if (conf == NULL) |
| 147 | { |
| 148 | return NULL; |
| 149 | } |
| 150 | else |
| 151 | { |
| 152 | CONF ctmp; |
| 153 | CONF_set_nconf(&ctmp, conf); |
| 154 | return NCONF_get_section(&ctmp, section); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | char *CONF_get_string(LHASH_OF(CONF_VALUE) *conf,const char *group, |
| 159 | const char *name) |
| 160 | { |
| 161 | if (conf == NULL) |
| 162 | { |
| 163 | return NCONF_get_string(NULL, group, name); |
| 164 | } |
| 165 | else |
| 166 | { |
| 167 | CONF ctmp; |
| 168 | CONF_set_nconf(&ctmp, conf); |
| 169 | return NCONF_get_string(&ctmp, group, name); |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | long CONF_get_number(LHASH_OF(CONF_VALUE) *conf,const char *group, |
| 174 | const char *name) |
| 175 | { |
| 176 | int status; |
| 177 | long result = 0; |
| 178 | |
| 179 | if (conf == NULL) |
| 180 | { |
| 181 | status = NCONF_get_number_e(NULL, group, name, &result); |
| 182 | } |
| 183 | else |
| 184 | { |
| 185 | CONF ctmp; |
| 186 | CONF_set_nconf(&ctmp, conf); |
| 187 | status = NCONF_get_number_e(&ctmp, group, name, &result); |
| 188 | } |
| 189 | |
| 190 | if (status == 0) |
| 191 | { |
| 192 | /* This function does not believe in errors... */ |
| 193 | ERR_clear_error(); |
| 194 | } |
| 195 | return result; |
| 196 | } |
| 197 | |
| 198 | void CONF_free(LHASH_OF(CONF_VALUE) *conf) |
| 199 | { |
| 200 | CONF ctmp; |
| 201 | CONF_set_nconf(&ctmp, conf); |
| 202 | NCONF_free_data(&ctmp); |
| 203 | } |
| 204 | |
| 205 | #ifndef OPENSSL_NO_FP_API |
| 206 | int CONF_dump_fp(LHASH_OF(CONF_VALUE) *conf, FILE *out) |
| 207 | { |
| 208 | BIO *btmp; |
| 209 | int ret; |
| 210 | |
| 211 | if(!(btmp = BIO_new_fp(out, BIO_NOCLOSE))) { |
| 212 | CONFerr(CONF_F_CONF_DUMP_FP,ERR_R_BUF_LIB); |
| 213 | return 0; |
| 214 | } |
| 215 | ret = CONF_dump_bio(conf, btmp); |
| 216 | BIO_free(btmp); |
| 217 | return ret; |
| 218 | } |
| 219 | #endif |
| 220 | |
| 221 | int CONF_dump_bio(LHASH_OF(CONF_VALUE) *conf, BIO *out) |
| 222 | { |
| 223 | CONF ctmp; |
| 224 | CONF_set_nconf(&ctmp, conf); |
| 225 | return NCONF_dump_bio(&ctmp, out); |
| 226 | } |
| 227 | |
| 228 | /* The following section contains the "New CONF" functions. They are |
| 229 | completely centralised around a new CONF structure that may contain |
| 230 | basically anything, but at least a method pointer and a table of data. |
| 231 | These functions are also written in terms of the bridge functions used |
| 232 | by the "CONF classic" functions, for consistency. */ |
| 233 | |
| 234 | CONF *NCONF_new(CONF_METHOD *meth) |
| 235 | { |
| 236 | CONF *ret; |
| 237 | |
| 238 | if (meth == NULL) |
| 239 | meth = NCONF_default(); |
| 240 | |
| 241 | ret = meth->create(meth); |
| 242 | if (ret == NULL) |
| 243 | { |
| 244 | CONFerr(CONF_F_NCONF_NEW,ERR_R_MALLOC_FAILURE); |
| 245 | return(NULL); |
| 246 | } |
| 247 | |
| 248 | return ret; |
| 249 | } |
| 250 | |
| 251 | void NCONF_free(CONF *conf) |
| 252 | { |
| 253 | if (conf == NULL) |
| 254 | return; |
| 255 | conf->meth->destroy(conf); |
| 256 | } |
| 257 | |
| 258 | void NCONF_free_data(CONF *conf) |
| 259 | { |
| 260 | if (conf == NULL) |
| 261 | return; |
| 262 | conf->meth->destroy_data(conf); |
| 263 | } |
| 264 | |
| 265 | int NCONF_load(CONF *conf, const char *file, long *eline) |
| 266 | { |
| 267 | if (conf == NULL) |
| 268 | { |
| 269 | CONFerr(CONF_F_NCONF_LOAD,CONF_R_NO_CONF); |
| 270 | return 0; |
| 271 | } |
| 272 | |
| 273 | return conf->meth->load(conf, file, eline); |
| 274 | } |
| 275 | |
| 276 | #ifndef OPENSSL_NO_FP_API |
| 277 | int NCONF_load_fp(CONF *conf, FILE *fp,long *eline) |
| 278 | { |
| 279 | BIO *btmp; |
| 280 | int ret; |
| 281 | if(!(btmp = BIO_new_fp(fp, BIO_NOCLOSE))) |
| 282 | { |
| 283 | CONFerr(CONF_F_NCONF_LOAD_FP,ERR_R_BUF_LIB); |
| 284 | return 0; |
| 285 | } |
| 286 | ret = NCONF_load_bio(conf, btmp, eline); |
| 287 | BIO_free(btmp); |
| 288 | return ret; |
| 289 | } |
| 290 | #endif |
| 291 | |
| 292 | int NCONF_load_bio(CONF *conf, BIO *bp,long *eline) |
| 293 | { |
| 294 | if (conf == NULL) |
| 295 | { |
| 296 | CONFerr(CONF_F_NCONF_LOAD_BIO,CONF_R_NO_CONF); |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | return conf->meth->load_bio(conf, bp, eline); |
| 301 | } |
| 302 | |
| 303 | STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf,const char *section) |
| 304 | { |
| 305 | if (conf == NULL) |
| 306 | { |
| 307 | CONFerr(CONF_F_NCONF_GET_SECTION,CONF_R_NO_CONF); |
| 308 | return NULL; |
| 309 | } |
| 310 | |
| 311 | if (section == NULL) |
| 312 | { |
| 313 | CONFerr(CONF_F_NCONF_GET_SECTION,CONF_R_NO_SECTION); |
| 314 | return NULL; |
| 315 | } |
| 316 | |
| 317 | return _CONF_get_section_values(conf, section); |
| 318 | } |
| 319 | |
| 320 | char *NCONF_get_string(const CONF *conf,const char *group,const char *name) |
| 321 | { |
| 322 | char *s = _CONF_get_string(conf, group, name); |
| 323 | |
| 324 | /* Since we may get a value from an environment variable even |
| 325 | if conf is NULL, let's check the value first */ |
| 326 | if (s) return s; |
| 327 | |
| 328 | if (conf == NULL) |
| 329 | { |
| 330 | CONFerr(CONF_F_NCONF_GET_STRING, |
| 331 | CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE); |
| 332 | return NULL; |
| 333 | } |
| 334 | CONFerr(CONF_F_NCONF_GET_STRING, |
| 335 | CONF_R_NO_VALUE); |
| 336 | ERR_add_error_data(4,"group=",group," name=",name); |
| 337 | return NULL; |
| 338 | } |
| 339 | |
| 340 | int NCONF_get_number_e(const CONF *conf,const char *group,const char *name, |
| 341 | long *result) |
| 342 | { |
| 343 | char *str; |
| 344 | |
| 345 | if (result == NULL) |
| 346 | { |
| 347 | CONFerr(CONF_F_NCONF_GET_NUMBER_E,ERR_R_PASSED_NULL_PARAMETER); |
| 348 | return 0; |
| 349 | } |
| 350 | |
| 351 | str = NCONF_get_string(conf,group,name); |
| 352 | |
| 353 | if (str == NULL) |
| 354 | return 0; |
| 355 | |
| 356 | for (*result = 0;conf->meth->is_number(conf, *str);) |
| 357 | { |
| 358 | *result = (*result)*10 + conf->meth->to_int(conf, *str); |
| 359 | str++; |
| 360 | } |
| 361 | |
| 362 | return 1; |
| 363 | } |
| 364 | |
| 365 | #ifndef OPENSSL_NO_FP_API |
| 366 | int NCONF_dump_fp(const CONF *conf, FILE *out) |
| 367 | { |
| 368 | BIO *btmp; |
| 369 | int ret; |
| 370 | if(!(btmp = BIO_new_fp(out, BIO_NOCLOSE))) { |
| 371 | CONFerr(CONF_F_NCONF_DUMP_FP,ERR_R_BUF_LIB); |
| 372 | return 0; |
| 373 | } |
| 374 | ret = NCONF_dump_bio(conf, btmp); |
| 375 | BIO_free(btmp); |
| 376 | return ret; |
| 377 | } |
| 378 | #endif |
| 379 | |
| 380 | int NCONF_dump_bio(const CONF *conf, BIO *out) |
| 381 | { |
| 382 | if (conf == NULL) |
| 383 | { |
| 384 | CONFerr(CONF_F_NCONF_DUMP_BIO,CONF_R_NO_CONF); |
| 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | return conf->meth->dump(conf, out); |
| 389 | } |
| 390 | |
| 391 | |
| 392 | /* This function should be avoided */ |
| 393 | #if 0 |
| 394 | long NCONF_get_number(CONF *conf,char *group,char *name) |
| 395 | { |
| 396 | int status; |
| 397 | long ret=0; |
| 398 | |
| 399 | status = NCONF_get_number_e(conf, group, name, &ret); |
| 400 | if (status == 0) |
| 401 | { |
| 402 | /* This function does not believe in errors... */ |
| 403 | ERR_get_error(); |
| 404 | } |
| 405 | return ret; |
| 406 | } |
| 407 | #endif |