1 /* conf_lib.c */ 2 /* Written by Richard Levitte (richard (at) 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 (at) 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 (at) cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh (at) 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 408
