crypto/openssl/crypto/asn1/asn1_gen.c

   1 /* asn1_gen.c */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project 2002.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2002 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 "cryptlib.h"
  60 #include <openssl/asn1.h>
  61 #include <openssl/x509v3.h>
  62
  63 #define ASN1_GEN_FLAG           0x10000
  64 #define ASN1_GEN_FLAG_IMP       (ASN1_GEN_FLAG|1)
  65 #define ASN1_GEN_FLAG_EXP       (ASN1_GEN_FLAG|2)
  66 #define ASN1_GEN_FLAG_TAG       (ASN1_GEN_FLAG|3)
  67 #define ASN1_GEN_FLAG_BITWRAP   (ASN1_GEN_FLAG|4)
  68 #define ASN1_GEN_FLAG_OCTWRAP   (ASN1_GEN_FLAG|5)
  69 #define ASN1_GEN_FLAG_SEQWRAP   (ASN1_GEN_FLAG|6)
  70 #define ASN1_GEN_FLAG_SETWRAP   (ASN1_GEN_FLAG|7)
  71 #define ASN1_GEN_FLAG_FORMAT    (ASN1_GEN_FLAG|8)
  72
  73 #define ASN1_GEN_STR(str,val)   {str, sizeof(str) - 1, val}
  74
  75 #define ASN1_FLAG_EXP_MAX       20
  76
  77 /* Input formats */
  78
  79 /* ASCII: default */
  80 #define ASN1_GEN_FORMAT_ASCII   1
  81 /* UTF8 */
  82 #define ASN1_GEN_FORMAT_UTF8    2
  83 /* Hex */
  84 #define ASN1_GEN_FORMAT_HEX     3
  85 /* List of bits */
  86 #define ASN1_GEN_FORMAT_BITLIST 4
  87
  88
  89 struct tag_name_st
  90         {
  91         const char *strnam;
  92         int len;
  93         int tag;
  94         };
  95
  96 typedef struct
  97         {
  98         int exp_tag;
  99         int exp_class;
 100         int exp_constructed;
 101         int exp_pad;
 102         long exp_len;
 103         } tag_exp_type;
 104
 105 typedef struct
 106         {
 107         int imp_tag;
 108         int imp_class;
 109         int utype;
 110         int format;
 111         const char *str;
 112         tag_exp_type exp_list[ASN1_FLAG_EXP_MAX];
 113         int exp_count;
 114         } tag_exp_arg;
 115
 116 static int bitstr_cb(const char *elem, int len, void *bitstr);
 117 static int asn1_cb(const char *elem, int len, void *bitstr);
 118 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, int exp_constructed, int exp_pad, int imp_ok);
 119 static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass);
 120 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf);
 121 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype);
 122 static int asn1_str2tag(const char *tagstr, int len);
 123
 124 ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf)
 125         {
 126         X509V3_CTX cnf;
 127
 128         if (!nconf)
 129                 return ASN1_generate_v3(str, NULL);
 130
 131         X509V3_set_nconf(&cnf, nconf);
 132         return ASN1_generate_v3(str, &cnf);
 133         }
 134
 135 ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf)
 136         {
 137         ASN1_TYPE *ret;
 138         tag_exp_arg asn1_tags;
 139         tag_exp_type *etmp;
 140
 141         int i, len;
 142
 143         unsigned char *orig_der = NULL, *new_der = NULL;
 144         const unsigned char *cpy_start;
 145         unsigned char *p;
 146         const unsigned char *cp;
 147         int cpy_len;
 148         long hdr_len;
 149         int hdr_constructed = 0, hdr_tag, hdr_class;
 150         int r;
 151
 152         asn1_tags.imp_tag = -1;
 153         asn1_tags.imp_class = -1;
 154         asn1_tags.format = ASN1_GEN_FORMAT_ASCII;
 155         asn1_tags.exp_count = 0;
 156         if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0)
 157                 return NULL;
 158
 159         if ((asn1_tags.utype == V_ASN1_SEQUENCE) || (asn1_tags.utype == V_ASN1_SET))
 160                 {
 161                 if (!cnf)
 162                         {
 163                         ASN1err(ASN1_F_ASN1_GENERATE_V3, ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG);
 164                         return NULL;
 165                         }
 166                 ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf);
 167                 }
 168         else
 169                 ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype);
 170
 171         if (!ret)
 172                 return NULL;
 173
 174         /* If no tagging return base type */
 175         if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0))
 176                 return ret;
 177
 178         /* Generate the encoding */
 179         cpy_len = i2d_ASN1_TYPE(ret, &orig_der);
 180         ASN1_TYPE_free(ret);
 181         ret = NULL;
 182         /* Set point to start copying for modified encoding */
 183         cpy_start = orig_der;
 184
 185         /* Do we need IMPLICIT tagging? */
 186         if (asn1_tags.imp_tag != -1)
 187                 {
 188                 /* If IMPLICIT we will replace the underlying tag */
 189                 /* Skip existing tag+len */
 190                 r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class, cpy_len);
 191                 if (r & 0x80)
 192                         goto err;
 193                 /* Update copy length */
 194                 cpy_len -= cpy_start - orig_der;
 195                 /* For IMPLICIT tagging the length should match the
 196                  * original length and constructed flag should be
 197                  * consistent.
 198                  */
 199                 if (r & 0x1)
 200                         {
 201                         /* Indefinite length constructed */
 202                         hdr_constructed = 2;
 203                         hdr_len = 0;
 204                         }
 205                 else
 206                         /* Just retain constructed flag */
 207                         hdr_constructed = r & V_ASN1_CONSTRUCTED;
 208                 /* Work out new length with IMPLICIT tag: ignore constructed
 209                  * because it will mess up if indefinite length
 210                  */
 211                 len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag);
 212                 }
 213         else
 214                 len = cpy_len;
 215
 216         /* Work out length in any EXPLICIT, starting from end */
 217
 218         for(i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1; i < asn1_tags.exp_count; i++, etmp--)
 219                 {
 220                 /* Content length: number of content octets + any padding */
 221                 len += etmp->exp_pad;
 222                 etmp->exp_len = len;
 223                 /* Total object length: length including new header */
 224                 len = ASN1_object_size(0, len, etmp->exp_tag);
 225                 }
 226
 227         /* Allocate buffer for new encoding */
 228
 229         new_der = OPENSSL_malloc(len);
 230         if (!new_der)
 231                 goto err;
 232
 233         /* Generate tagged encoding */
 234
 235         p = new_der;
 236
 237         /* Output explicit tags first */
 238
 239         for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count; i++, etmp++)
 240                 {
 241                 ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len,
 242                                         etmp->exp_tag, etmp->exp_class);
 243                 if (etmp->exp_pad)
 244                         *p++ = 0;
 245                 }
 246
 247         /* If IMPLICIT, output tag */
 248
 249         if (asn1_tags.imp_tag != -1)
 250                 ASN1_put_object(&p, hdr_constructed, hdr_len,
 251                                         asn1_tags.imp_tag, asn1_tags.imp_class);
 252
 253         /* Copy across original encoding */
 254         memcpy(p, cpy_start, cpy_len);
 255
 256         cp = new_der;
 257
 258         /* Obtain new ASN1_TYPE structure */
 259         ret = d2i_ASN1_TYPE(NULL, &cp, len);
 260
 261         err:
 262         if (orig_der)
 263                 OPENSSL_free(orig_der);
 264         if (new_der)
 265                 OPENSSL_free(new_der);
 266
 267         return ret;
 268
 269         }
 270
 271 static int asn1_cb(const char *elem, int len, void *bitstr)
 272         {
 273         tag_exp_arg *arg = bitstr;
 274         int i;
 275         int utype;
 276         int vlen = 0;
 277         const char *p, *vstart = NULL;
 278
 279         int tmp_tag, tmp_class;
 280
 281         for(i = 0, p = elem; i < len; p++, i++)
 282                 {
 283                 /* Look for the ':' in name value pairs */
 284                 if (*p == ':')
 285                         {
 286                         vstart = p + 1;
 287                         vlen = len - (vstart - elem);
 288                         len = p - elem;
 289                         break;
 290                         }
 291                 }
 292
 293         utype = asn1_str2tag(elem, len);
 294
 295         if (utype == -1)
 296                 {
 297                 ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKNOWN_TAG);
 298                 ERR_add_error_data(2, "tag=", elem);
 299                 return -1;
 300                 }
 301
 302         /* If this is not a modifier mark end of string and exit */
 303         if (!(utype & ASN1_GEN_FLAG))
 304                 {
 305                 arg->utype = utype;
 306                 arg->str = vstart;
 307                 /* If no value and not end of string, error */
 308                 if (!vstart && elem[len])
 309                         {
 310                         ASN1err(ASN1_F_ASN1_CB, ASN1_R_MISSING_VALUE);
 311                         return -1;
 312                         }
 313                 return 0;
 314                 }
 315
 316         switch(utype)
 317                 {
 318
 319                 case ASN1_GEN_FLAG_IMP:
 320                 /* Check for illegal multiple IMPLICIT tagging */
 321                 if (arg->imp_tag != -1)
 322                         {
 323                         ASN1err(ASN1_F_ASN1_CB, ASN1_R_ILLEGAL_NESTED_TAGGING);
 324                         return -1;
 325                         }
 326                 if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class))
 327                         return -1;
 328                 break;
 329
 330                 case ASN1_GEN_FLAG_EXP:
 331
 332                 if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class))
 333                         return -1;
 334                 if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0))
 335                         return -1;
 336                 break;
 337
 338                 case ASN1_GEN_FLAG_SEQWRAP:
 339                 if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1))
 340                         return -1;
 341                 break;
 342
 343                 case ASN1_GEN_FLAG_SETWRAP:
 344                 if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1))
 345                         return -1;
 346                 break;
 347
 348                 case ASN1_GEN_FLAG_BITWRAP:
 349                 if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1))
 350                         return -1;
 351                 break;
 352
 353                 case ASN1_GEN_FLAG_OCTWRAP:
 354                 if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1))
 355                         return -1;
 356                 break;
 357
 358                 case ASN1_GEN_FLAG_FORMAT:
 359                 if (!strncmp(vstart, "ASCII", 5))
 360                         arg->format = ASN1_GEN_FORMAT_ASCII;
 361                 else if (!strncmp(vstart, "UTF8", 4))
 362                         arg->format = ASN1_GEN_FORMAT_UTF8;
 363                 else if (!strncmp(vstart, "HEX", 3))
 364                         arg->format = ASN1_GEN_FORMAT_HEX;
 365                 else if (!strncmp(vstart, "BITLIST", 3))
 366                         arg->format = ASN1_GEN_FORMAT_BITLIST;
 367                 else
 368                         {
 369                         ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKOWN_FORMAT);
 370                         return -1;
 371                         }
 372                 break;
 373
 374                 }
 375
 376         return 1;
 377
 378         }
 379
 380 static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass)
 381         {
 382         char erch[2];
 383         long tag_num;
 384         char *eptr;
 385         if (!vstart)
 386                 return 0;
 387         tag_num = strtoul(vstart, &eptr, 10);
 388         /* Check we haven't gone past max length: should be impossible */
 389         if (eptr && *eptr && (eptr > vstart + vlen))
 390                 return 0;
 391         if (tag_num < 0)
 392                 {
 393                 ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_NUMBER);
 394                 return 0;
 395                 }
 396         *ptag = tag_num;
 397         /* If we have non numeric characters, parse them */
 398         if (eptr)
 399                 vlen -= eptr - vstart;
 400         else
 401                 vlen = 0;
 402         if (vlen)
 403                 {
 404                 switch (*eptr)
 405                         {
 406
 407                         case 'U':
 408                         *pclass = V_ASN1_UNIVERSAL;
 409                         break;
 410
 411                         case 'A':
 412                         *pclass = V_ASN1_APPLICATION;
 413                         break;
 414
 415                         case 'P':
 416                         *pclass = V_ASN1_PRIVATE;
 417                         break;
 418
 419                         case 'C':
 420                         *pclass = V_ASN1_CONTEXT_SPECIFIC;
 421                         break;
 422
 423                         default:
 424                         erch[0] = *eptr;
 425                         erch[1] = 0;
 426                         ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_MODIFIER);
 427                         ERR_add_error_data(2, "Char=", erch);
 428                         return 0;
 429                         break;
 430
 431                         }
 432                 }
 433         else
 434                 *pclass = V_ASN1_CONTEXT_SPECIFIC;
 435
 436         return 1;
 437
 438         }
 439
 440 /* Handle multiple types: SET and SEQUENCE */
 441
 442 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf)
 443         {
 444         ASN1_TYPE *ret = NULL, *typ = NULL;
 445         STACK_OF(ASN1_TYPE) *sk = NULL;
 446         STACK_OF(CONF_VALUE) *sect = NULL;
 447         unsigned char *der = NULL, *p;
 448         int derlen;
 449         int i, is_set;
 450         sk = sk_ASN1_TYPE_new_null();
 451         if (!sk)
 452                 goto bad;
 453         if (section)
 454                 {
 455                 if (!cnf)
 456                         goto bad;
 457                 sect = X509V3_get_section(cnf, (char *)section);
 458                 if (!sect)
 459                         goto bad;
 460                 for (i = 0; i < sk_CONF_VALUE_num(sect); i++)
 461                         {
 462                         typ = ASN1_generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf);
 463                         if (!typ)
 464                                 goto bad;
 465                         if (!sk_ASN1_TYPE_push(sk, typ))
 466                                 goto bad;
 467                         typ = NULL;
 468                         }
 469                 }
 470
 471         /* Now we has a STACK of the components, convert to the correct form */
 472
 473         if (utype == V_ASN1_SET)
 474                 is_set = 1;
 475         else
 476                 is_set = 0;
 477
 478
 479         derlen = i2d_ASN1_SET_OF_ASN1_TYPE(sk, NULL, i2d_ASN1_TYPE, utype,
 480                                            V_ASN1_UNIVERSAL, is_set);
 481         der = OPENSSL_malloc(derlen);
 482         if (!der)
 483                 goto bad;
 484         p = der;
 485         i2d_ASN1_SET_OF_ASN1_TYPE(sk, &p, i2d_ASN1_TYPE, utype,
 486                                   V_ASN1_UNIVERSAL, is_set);
 487
 488         if (!(ret = ASN1_TYPE_new()))
 489                 goto bad;
 490
 491         if (!(ret->value.asn1_string = ASN1_STRING_type_new(utype)))
 492                 goto bad;
 493
 494         ret->type = utype;
 495
 496         ret->value.asn1_string->data = der;
 497         ret->value.asn1_string->length = derlen;
 498
 499         der = NULL;
 500
 501         bad:
 502
 503         if (der)
 504                 OPENSSL_free(der);
 505
 506         if (sk)
 507                 sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free);
 508         if (typ)
 509                 ASN1_TYPE_free(typ);
 510         if (sect)
 511                 X509V3_section_free(cnf, sect);
 512
 513         return ret;
 514         }
 515
 516 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, int exp_constructed, int exp_pad, int imp_ok)
 517         {
 518         tag_exp_type *exp_tmp;
 519         /* Can only have IMPLICIT if permitted */
 520         if ((arg->imp_tag != -1) && !imp_ok)
 521                 {
 522                 ASN1err(ASN1_F_APPEND_EXP, ASN1_R_ILLEGAL_IMPLICIT_TAG);
 523                 return 0;
 524                 }
 525
 526         if (arg->exp_count == ASN1_FLAG_EXP_MAX)
 527                 {
 528                 ASN1err(ASN1_F_APPEND_EXP, ASN1_R_DEPTH_EXCEEDED);
 529                 return 0;
 530                 }
 531
 532         exp_tmp = &arg->exp_list[arg->exp_count++];
 533
 534         /* If IMPLICIT set tag to implicit value then
 535          * reset implicit tag since it has been used.
 536          */
 537         if (arg->imp_tag != -1)
 538                 {
 539                 exp_tmp->exp_tag = arg->imp_tag;
 540                 exp_tmp->exp_class = arg->imp_class;
 541                 arg->imp_tag = -1;
 542                 arg->imp_class = -1;
 543                 }
 544         else
 545                 {
 546                 exp_tmp->exp_tag = exp_tag;
 547                 exp_tmp->exp_class = exp_class;
 548                 }
 549         exp_tmp->exp_constructed = exp_constructed;
 550         exp_tmp->exp_pad = exp_pad;
 551
 552         return 1;
 553         }
 554
 555
 556 static int asn1_str2tag(const char *tagstr, int len)
 557         {
 558         unsigned int i;
 559         static struct tag_name_st *tntmp, tnst [] = {
 560                 ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN),
 561                 ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN),
 562                 ASN1_GEN_STR("NULL", V_ASN1_NULL),
 563                 ASN1_GEN_STR("INT", V_ASN1_INTEGER),
 564                 ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER),
 565                 ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED),
 566                 ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED),
 567                 ASN1_GEN_STR("OID", V_ASN1_OBJECT),
 568                 ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT),
 569                 ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME),
 570                 ASN1_GEN_STR("UTC", V_ASN1_UTCTIME),
 571                 ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME),
 572                 ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME),
 573                 ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING),
 574                 ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING),
 575                 ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING),
 576                 ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING),
 577                 ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING),
 578                 ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING),
 579                 ASN1_GEN_STR("IA5", V_ASN1_IA5STRING),
 580                 ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING),
 581                 ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING),
 582                 ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING),
 583                 ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING),
 584                 ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING),
 585                 ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING),
 586                 ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING),
 587                 ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING),
 588                 ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING),
 589                 ASN1_GEN_STR("T61", V_ASN1_T61STRING),
 590                 ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING),
 591                 ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING),
 592                 ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING),
 593                 ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING),
 594
 595                 /* Special cases */
 596                 ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE),
 597                 ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE),
 598                 ASN1_GEN_STR("SET", V_ASN1_SET),
 599                 /* type modifiers */
 600                 /* Explicit tag */
 601                 ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP),
 602                 ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP),
 603                 /* Implicit tag */
 604                 ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP),
 605                 ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP),
 606                 /* OCTET STRING wrapper */
 607                 ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP),
 608                 /* SEQUENCE wrapper */
 609                 ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP),
 610                 /* SET wrapper */
 611                 ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP),
 612                 /* BIT STRING wrapper */
 613                 ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP),
 614                 ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT),
 615                 ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT),
 616         };
 617
 618         if (len == -1)
 619                 len = strlen(tagstr);
 620
 621         tntmp = tnst;
 622         for (i = 0; i < sizeof(tnst) / sizeof(struct tag_name_st); i++, tntmp++)
 623                 {
 624                 if ((len == tntmp->len) && !strncmp(tntmp->strnam, tagstr, len))
 625                         return tntmp->tag;
 626                 }
 627
 628         return -1;
 629         }
 630
 631 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype)
 632         {
 633         ASN1_TYPE *atmp = NULL;
 634
 635         CONF_VALUE vtmp;
 636
 637         unsigned char *rdata;
 638         long rdlen;
 639
 640         int no_unused = 1;
 641
 642         if (!(atmp = ASN1_TYPE_new()))
 643                 {
 644                 ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 645                 return NULL;
 646                 }
 647
 648         if (!str)
 649                 str = "";
 650
 651         switch(utype)
 652                 {
 653
 654                 case V_ASN1_NULL:
 655                 if (str && *str)
 656                         {
 657                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_NULL_VALUE);
 658                         goto bad_form;
 659                         }
 660                 break;
 661
 662                 case V_ASN1_BOOLEAN:
 663                 if (format != ASN1_GEN_FORMAT_ASCII)
 664                         {
 665                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_NOT_ASCII_FORMAT);
 666                         goto bad_form;
 667                         }
 668                 vtmp.name = NULL;
 669                 vtmp.section = NULL;
 670                 vtmp.value = (char *)str;
 671                 if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean))
 672                         {
 673                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BOOLEAN);
 674                         goto bad_str;
 675                         }
 676                 break;
 677
 678                 case V_ASN1_INTEGER:
 679                 case V_ASN1_ENUMERATED:
 680                 if (format != ASN1_GEN_FORMAT_ASCII)
 681                         {
 682                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_INTEGER_NOT_ASCII_FORMAT);
 683                         goto bad_form;
 684                         }
 685                 if (!(atmp->value.integer = s2i_ASN1_INTEGER(NULL, (char *)str)))
 686                         {
 687                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_INTEGER);
 688                         goto bad_str;
 689                         }
 690                 break;
 691
 692                 case V_ASN1_OBJECT:
 693                 if (format != ASN1_GEN_FORMAT_ASCII)
 694                         {
 695                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_OBJECT_NOT_ASCII_FORMAT);
 696                         goto bad_form;
 697                         }
 698                 if (!(atmp->value.object = OBJ_txt2obj(str, 0)))
 699                         {
 700                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_OBJECT);
 701                         goto bad_str;
 702                         }
 703                 break;
 704
 705                 case V_ASN1_UTCTIME:
 706                 case V_ASN1_GENERALIZEDTIME:
 707                 if (format != ASN1_GEN_FORMAT_ASCII)
 708                         {
 709                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_TIME_NOT_ASCII_FORMAT);
 710                         goto bad_form;
 711                         }
 712                 if (!(atmp->value.asn1_string = ASN1_STRING_new()))
 713                         {
 714                         ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 715                         goto bad_str;
 716                         }
 717                 if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1))
 718                         {
 719                         ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 720                         goto bad_str;
 721                         }
 722                 atmp->value.asn1_string->type = utype;
 723                 if (!ASN1_TIME_check(atmp->value.asn1_string))
 724                         {
 725                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_TIME_VALUE);
 726                         goto bad_str;
 727                         }
 728
 729                 break;
 730
 731                 case V_ASN1_BMPSTRING:
 732                 case V_ASN1_PRINTABLESTRING:
 733                 case V_ASN1_IA5STRING:
 734                 case V_ASN1_T61STRING:
 735                 case V_ASN1_UTF8STRING:
 736                 case V_ASN1_VISIBLESTRING:
 737                 case V_ASN1_UNIVERSALSTRING:
 738                 case V_ASN1_GENERALSTRING:
 739
 740                 if (format == ASN1_GEN_FORMAT_ASCII)
 741                         format = MBSTRING_ASC;
 742                 else if (format == ASN1_GEN_FORMAT_UTF8)
 743                         format = MBSTRING_UTF8;
 744                 else
 745                         {
 746                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_FORMAT);
 747                         goto bad_form;
 748                         }
 749
 750
 751                 if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str,
 752                                                 -1, format, ASN1_tag2bit(utype)) <= 0)
 753                         {
 754                         ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 755                         goto bad_str;
 756                         }
 757
 758
 759                 break;
 760
 761                 case V_ASN1_BIT_STRING:
 762
 763                 case V_ASN1_OCTET_STRING:
 764
 765                 if (!(atmp->value.asn1_string = ASN1_STRING_new()))
 766                         {
 767                         ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 768                         goto bad_form;
 769                         }
 770
 771                 if (format == ASN1_GEN_FORMAT_HEX)
 772                         {
 773
 774                         if (!(rdata = string_to_hex((char *)str, &rdlen)))
 775                                 {
 776                                 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_HEX);
 777                                 goto bad_str;
 778                                 }
 779
 780                         atmp->value.asn1_string->data = rdata;
 781                         atmp->value.asn1_string->length = rdlen;
 782                         atmp->value.asn1_string->type = utype;
 783
 784                         }
 785                 else if (format == ASN1_GEN_FORMAT_ASCII)
 786                         ASN1_STRING_set(atmp->value.asn1_string, str, -1);
 787                 else if ((format == ASN1_GEN_FORMAT_BITLIST) && (utype == V_ASN1_BIT_STRING))
 788                         {
 789                         if (!CONF_parse_list(str, ',', 1, bitstr_cb, atmp->value.bit_string))
 790                                 {
 791                                 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_LIST_ERROR);
 792                                 goto bad_str;
 793                                 }
 794                         no_unused = 0;
 795
 796                         }
 797                 else
 798                         {
 799                         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BITSTRING_FORMAT);
 800                         goto bad_form;
 801                         }
 802
 803                 if ((utype == V_ASN1_BIT_STRING) && no_unused)
 804                         {
 805                         atmp->value.asn1_string->flags
 806                                 &= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
 807                         atmp->value.asn1_string->flags
 808                                 |= ASN1_STRING_FLAG_BITS_LEFT;
 809                         }
 810
 811
 812                 break;
 813
 814                 default:
 815                 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_UNSUPPORTED_TYPE);
 816                 goto bad_str;
 817                 break;
 818                 }
 819
 820
 821         atmp->type = utype;
 822         return atmp;
 823
 824
 825         bad_str:
 826         ERR_add_error_data(2, "string=", str);
 827         bad_form:
 828
 829         ASN1_TYPE_free(atmp);
 830         return NULL;
 831
 832         }
 833
 834 static int bitstr_cb(const char *elem, int len, void *bitstr)
 835         {
 836         long bitnum;
 837         char *eptr;
 838         if (!elem)
 839                 return 0;
 840         bitnum = strtoul(elem, &eptr, 10);
 841         if (eptr && *eptr && (eptr != elem + len))
 842                 return 0;
 843         if (bitnum < 0)
 844                 {
 845                 ASN1err(ASN1_F_BITSTR_CB, ASN1_R_INVALID_NUMBER);
 846                 return 0;
 847                 }
 848         if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1))
 849                 {
 850                 ASN1err(ASN1_F_BITSTR_CB, ERR_R_MALLOC_FAILURE);
 851                 return 0;
 852                 }
 853         return 1;
 854         }
 855