Cryptlib/OpenSSL/crypto/conf/conf_lib.c

   1 /* conf_lib.c */
   2 /*
   3  * Written by Richard Levitte (richard@levitte.org) for the OpenSSL project
   4  * 2000.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61 #include <openssl/crypto.h>
  62 #include <openssl/err.h>
  63 #include <openssl/conf.h>
  64 #include <openssl/conf_api.h>
  65 #include <openssl/lhash.h>
  66
  67 const char CONF_version[] = "CONF" OPENSSL_VERSION_PTEXT;
  68
  69 static CONF_METHOD *default_CONF_method = NULL;
  70
  71 /* Init a 'CONF' structure from an old LHASH */
  72
  73 void CONF_set_nconf(CONF *conf, LHASH_OF(CONF_VALUE) *hash)
  74 {
  75     if (default_CONF_method == NULL)
  76         default_CONF_method = NCONF_default();
  77
  78     default_CONF_method->init(conf);
  79     conf->data = hash;
  80 }
  81
  82 /*
  83  * The following section contains the "CONF classic" functions, rewritten in
  84  * terms of the new CONF interface.
  85  */
  86
  87 int CONF_set_default_method(CONF_METHOD *meth)
  88 {
  89     default_CONF_method = meth;
  90     return 1;
  91 }
  92
  93 #ifndef OPENSSL_NO_STDIO
  94 LHASH_OF(CONF_VALUE) *CONF_load(LHASH_OF(CONF_VALUE) *conf, const char *file,
  95                                 long *eline)
  96 {
  97     LHASH_OF(CONF_VALUE) *ltmp;
  98     BIO *in = NULL;
  99
 100 #ifdef OPENSSL_SYS_VMS
 101     in = BIO_new_file(file, "r");
 102 #else
 103     in = BIO_new_file(file, "rb");
 104 #endif
 105     if (in == NULL) {
 106         CONFerr(CONF_F_CONF_LOAD, ERR_R_SYS_LIB);
 107         return NULL;
 108     }
 109
 110     ltmp = CONF_load_bio(conf, in, eline);
 111     BIO_free(in);
 112
 113     return ltmp;
 114 }
 115 #endif
 116
 117 #ifndef OPENSSL_NO_FP_API
 118 LHASH_OF(CONF_VALUE) *CONF_load_fp(LHASH_OF(CONF_VALUE) *conf, FILE *fp,
 119                                    long *eline)
 120 {
 121     BIO *btmp;
 122     LHASH_OF(CONF_VALUE) *ltmp;
 123     if (!(btmp = BIO_new_fp(fp, BIO_NOCLOSE))) {
 124         CONFerr(CONF_F_CONF_LOAD_FP, ERR_R_BUF_LIB);
 125         return NULL;
 126     }
 127     ltmp = CONF_load_bio(conf, btmp, eline);
 128     BIO_free(btmp);
 129     return ltmp;
 130 }
 131 #endif
 132
 133 LHASH_OF(CONF_VALUE) *CONF_load_bio(LHASH_OF(CONF_VALUE) *conf, BIO *bp,
 134                                     long *eline)
 135 {
 136     CONF ctmp;
 137     int ret;
 138
 139     CONF_set_nconf(&ctmp, conf);
 140
 141     ret = NCONF_load_bio(&ctmp, bp, eline);
 142     if (ret)
 143         return ctmp.data;
 144     return NULL;
 145 }
 146
 147 STACK_OF(CONF_VALUE) *CONF_get_section(LHASH_OF(CONF_VALUE) *conf,
 148                                        const char *section)
 149 {
 150     if (conf == NULL) {
 151         return NULL;
 152     } else {
 153         CONF ctmp;
 154         CONF_set_nconf(&ctmp, conf);
 155         return NCONF_get_section(&ctmp, section);
 156     }
 157 }
 158
 159 char *CONF_get_string(LHASH_OF(CONF_VALUE) *conf, const char *group,
 160                       const char *name)
 161 {
 162     if (conf == NULL) {
 163         return NCONF_get_string(NULL, group, name);
 164     } else {
 165         CONF ctmp;
 166         CONF_set_nconf(&ctmp, conf);
 167         return NCONF_get_string(&ctmp, group, name);
 168     }
 169 }
 170
 171 long CONF_get_number(LHASH_OF(CONF_VALUE) *conf, const char *group,
 172                      const char *name)
 173 {
 174     int status;
 175     long result = 0;
 176
 177     if (conf == NULL) {
 178         status = NCONF_get_number_e(NULL, group, name, &result);
 179     } else {
 180         CONF ctmp;
 181         CONF_set_nconf(&ctmp, conf);
 182         status = NCONF_get_number_e(&ctmp, group, name, &result);
 183     }
 184
 185     if (status == 0) {
 186         /* This function does not believe in errors... */
 187         ERR_clear_error();
 188     }
 189     return result;
 190 }
 191
 192 void CONF_free(LHASH_OF(CONF_VALUE) *conf)
 193 {
 194     CONF ctmp;
 195     CONF_set_nconf(&ctmp, conf);
 196     NCONF_free_data(&ctmp);
 197 }
 198
 199 #ifndef OPENSSL_NO_FP_API
 200 int CONF_dump_fp(LHASH_OF(CONF_VALUE) *conf, FILE *out)
 201 {
 202     BIO *btmp;
 203     int ret;
 204
 205     if (!(btmp = BIO_new_fp(out, BIO_NOCLOSE))) {
 206         CONFerr(CONF_F_CONF_DUMP_FP, ERR_R_BUF_LIB);
 207         return 0;
 208     }
 209     ret = CONF_dump_bio(conf, btmp);
 210     BIO_free(btmp);
 211     return ret;
 212 }
 213 #endif
 214
 215 int CONF_dump_bio(LHASH_OF(CONF_VALUE) *conf, BIO *out)
 216 {
 217     CONF ctmp;
 218     CONF_set_nconf(&ctmp, conf);
 219     return NCONF_dump_bio(&ctmp, out);
 220 }
 221
 222 /*
 223  * The following section contains the "New CONF" functions.  They are
 224  * completely centralised around a new CONF structure that may contain
 225  * basically anything, but at least a method pointer and a table of data.
 226  * These functions are also written in terms of the bridge functions used by
 227  * the "CONF classic" functions, for consistency.
 228  */
 229
 230 CONF *NCONF_new(CONF_METHOD *meth)
 231 {
 232     CONF *ret;
 233
 234     if (meth == NULL)
 235         meth = NCONF_default();
 236
 237     ret = meth->create(meth);
 238     if (ret == NULL) {
 239         CONFerr(CONF_F_NCONF_NEW, ERR_R_MALLOC_FAILURE);
 240         return (NULL);
 241     }
 242
 243     return ret;
 244 }
 245
 246 void NCONF_free(CONF *conf)
 247 {
 248     if (conf == NULL)
 249         return;
 250     conf->meth->destroy(conf);
 251 }
 252
 253 void NCONF_free_data(CONF *conf)
 254 {
 255     if (conf == NULL)
 256         return;
 257     conf->meth->destroy_data(conf);
 258 }
 259
 260 #ifndef OPENSSL_NO_STDIO
 261 int NCONF_load(CONF *conf, const char *file, long *eline)
 262 {
 263     if (conf == NULL) {
 264         CONFerr(CONF_F_NCONF_LOAD, CONF_R_NO_CONF);
 265         return 0;
 266     }
 267
 268     return conf->meth->load(conf, file, eline);
 269 }
 270 #endif
 271
 272 #ifndef OPENSSL_NO_FP_API
 273 int NCONF_load_fp(CONF *conf, FILE *fp, long *eline)
 274 {
 275     BIO *btmp;
 276     int ret;
 277     if (!(btmp = BIO_new_fp(fp, BIO_NOCLOSE))) {
 278         CONFerr(CONF_F_NCONF_LOAD_FP, ERR_R_BUF_LIB);
 279         return 0;
 280     }
 281     ret = NCONF_load_bio(conf, btmp, eline);
 282     BIO_free(btmp);
 283     return ret;
 284 }
 285 #endif
 286
 287 int NCONF_load_bio(CONF *conf, BIO *bp, long *eline)
 288 {
 289     if (conf == NULL) {
 290         CONFerr(CONF_F_NCONF_LOAD_BIO, CONF_R_NO_CONF);
 291         return 0;
 292     }
 293
 294     return conf->meth->load_bio(conf, bp, eline);
 295 }
 296
 297 STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf, const char *section)
 298 {
 299     if (conf == NULL) {
 300         CONFerr(CONF_F_NCONF_GET_SECTION, CONF_R_NO_CONF);
 301         return NULL;
 302     }
 303
 304     if (section == NULL) {
 305         CONFerr(CONF_F_NCONF_GET_SECTION, CONF_R_NO_SECTION);
 306         return NULL;
 307     }
 308
 309     return _CONF_get_section_values(conf, section);
 310 }
 311
 312 char *NCONF_get_string(const CONF *conf, const char *group, const char *name)
 313 {
 314     char *s = _CONF_get_string(conf, group, name);
 315
 316     /*
 317      * Since we may get a value from an environment variable even if conf is
 318      * NULL, let's check the value first
 319      */
 320     if (s)
 321         return s;
 322
 323     if (conf == NULL) {
 324         CONFerr(CONF_F_NCONF_GET_STRING,
 325                 CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE);
 326         return NULL;
 327     }
 328     CONFerr(CONF_F_NCONF_GET_STRING, CONF_R_NO_VALUE);
 329     ERR_add_error_data(4, "group=", group, " name=", name);
 330     return NULL;
 331 }
 332
 333 int NCONF_get_number_e(const CONF *conf, const char *group, const char *name,
 334                        long *result)
 335 {
 336     char *str;
 337
 338     if (result == NULL) {
 339         CONFerr(CONF_F_NCONF_GET_NUMBER_E, ERR_R_PASSED_NULL_PARAMETER);
 340         return 0;
 341     }
 342
 343     if (conf == NULL)
 344         return 0;
 345
 346     str = NCONF_get_string(conf, group, name);
 347
 348     if (str == NULL)
 349         return 0;
 350
 351     for (*result = 0; conf->meth->is_number(conf, *str);) {
 352         *result = (*result) * 10 + conf->meth->to_int(conf, *str);
 353         str++;
 354     }
 355
 356     return 1;
 357 }
 358
 359 #ifndef OPENSSL_NO_FP_API
 360 int NCONF_dump_fp(const CONF *conf, FILE *out)
 361 {
 362     BIO *btmp;
 363     int ret;
 364     if (!(btmp = BIO_new_fp(out, BIO_NOCLOSE))) {
 365         CONFerr(CONF_F_NCONF_DUMP_FP, ERR_R_BUF_LIB);
 366         return 0;
 367     }
 368     ret = NCONF_dump_bio(conf, btmp);
 369     BIO_free(btmp);
 370     return ret;
 371 }
 372 #endif
 373
 374 int NCONF_dump_bio(const CONF *conf, BIO *out)
 375 {
 376     if (conf == NULL) {
 377         CONFerr(CONF_F_NCONF_DUMP_BIO, CONF_R_NO_CONF);
 378         return 0;
 379     }
 380
 381     return conf->meth->dump(conf, out);
 382 }
 383
 384 /* This function should be avoided */
 385 #if 0
 386 long NCONF_get_number(CONF *conf, char *group, char *name)
 387 {
 388     int status;
 389     long ret = 0;
 390
 391     status = NCONF_get_number_e(conf, group, name, &ret);
 392     if (status == 0) {
 393         /* This function does not believe in errors... */
 394         ERR_get_error();
 395     }
 396     return ret;
 397 }
 398 #endif