Cryptlib/OpenSSL/crypto/conf/conf_lib.c

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