release/src/router/openssl/crypto/asn1/asn1_gen.c

   1 /* asn1_gen.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   4  * 2002.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2002 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 "cryptlib.h"
  61 #include <openssl/asn1.h>
  62 #include <openssl/x509v3.h>
  63
  64 #define ASN1_GEN_FLAG           0x10000
  65 #define ASN1_GEN_FLAG_IMP       (ASN1_GEN_FLAG|1)
  66 #define ASN1_GEN_FLAG_EXP       (ASN1_GEN_FLAG|2)
  67 #define ASN1_GEN_FLAG_TAG       (ASN1_GEN_FLAG|3)
  68 #define ASN1_GEN_FLAG_BITWRAP   (ASN1_GEN_FLAG|4)
  69 #define ASN1_GEN_FLAG_OCTWRAP   (ASN1_GEN_FLAG|5)
  70 #define ASN1_GEN_FLAG_SEQWRAP   (ASN1_GEN_FLAG|6)
  71 #define ASN1_GEN_FLAG_SETWRAP   (ASN1_GEN_FLAG|7)
  72 #define ASN1_GEN_FLAG_FORMAT    (ASN1_GEN_FLAG|8)
  73
  74 #define ASN1_GEN_STR(str,val)   {str, sizeof(str) - 1, val}
  75
  76 #define ASN1_FLAG_EXP_MAX       20
  77
  78 /* Input formats */
  79
  80 /* ASCII: default */
  81 #define ASN1_GEN_FORMAT_ASCII   1
  82 /* UTF8 */
  83 #define ASN1_GEN_FORMAT_UTF8    2
  84 /* Hex */
  85 #define ASN1_GEN_FORMAT_HEX     3
  86 /* List of bits */
  87 #define ASN1_GEN_FORMAT_BITLIST 4
  88
  89 struct tag_name_st {
  90     const char *strnam;
  91     int len;
  92     int tag;
  93 };
  94
  95 typedef struct {
  96     int exp_tag;
  97     int exp_class;
  98     int exp_constructed;
  99     int exp_pad;
 100     long exp_len;
 101 } tag_exp_type;
 102
 103 typedef struct {
 104     int imp_tag;
 105     int imp_class;
 106     int utype;
 107     int format;
 108     const char *str;
 109     tag_exp_type exp_list[ASN1_FLAG_EXP_MAX];
 110     int exp_count;
 111 } tag_exp_arg;
 112
 113 static int bitstr_cb(const char *elem, int len, void *bitstr);
 114 static int asn1_cb(const char *elem, int len, void *bitstr);
 115 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class,
 116                       int exp_constructed, int exp_pad, int imp_ok);
 117 static int parse_tagging(const char *vstart, int vlen, int *ptag,
 118                          int *pclass);
 119 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf);
 120 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype);
 121 static int asn1_str2tag(const char *tagstr, int len);
 122
 123 ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf)
 124 {
 125     X509V3_CTX cnf;
 126
 127     if (!nconf)
 128         return ASN1_generate_v3(str, NULL);
 129
 130     X509V3_set_nconf(&cnf, nconf);
 131     return ASN1_generate_v3(str, &cnf);
 132 }
 133
 134 ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf)
 135 {
 136     ASN1_TYPE *ret;
 137     tag_exp_arg asn1_tags;
 138     tag_exp_type *etmp;
 139
 140     int i, len;
 141
 142     unsigned char *orig_der = NULL, *new_der = NULL;
 143     const unsigned char *cpy_start;
 144     unsigned char *p;
 145     const unsigned char *cp;
 146     int cpy_len;
 147     long hdr_len;
 148     int hdr_constructed = 0, hdr_tag, hdr_class;
 149     int r;
 150
 151     asn1_tags.imp_tag = -1;
 152     asn1_tags.imp_class = -1;
 153     asn1_tags.format = ASN1_GEN_FORMAT_ASCII;
 154     asn1_tags.exp_count = 0;
 155     if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0)
 156         return NULL;
 157
 158     if ((asn1_tags.utype == V_ASN1_SEQUENCE)
 159         || (asn1_tags.utype == V_ASN1_SET)) {
 160         if (!cnf) {
 161             ASN1err(ASN1_F_ASN1_GENERATE_V3,
 162                     ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG);
 163             return NULL;
 164         }
 165         ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf);
 166     } else
 167         ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype);
 168
 169     if (!ret)
 170         return NULL;
 171
 172     /* If no tagging return base type */
 173     if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0))
 174         return ret;
 175
 176     /* Generate the encoding */
 177     cpy_len = i2d_ASN1_TYPE(ret, &orig_der);
 178     ASN1_TYPE_free(ret);
 179     ret = NULL;
 180     /* Set point to start copying for modified encoding */
 181     cpy_start = orig_der;
 182
 183     /* Do we need IMPLICIT tagging? */
 184     if (asn1_tags.imp_tag != -1) {
 185         /* If IMPLICIT we will replace the underlying tag */
 186         /* Skip existing tag+len */
 187         r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class,
 188                             cpy_len);
 189         if (r & 0x80)
 190             goto err;
 191         /* Update copy length */
 192         cpy_len -= cpy_start - orig_der;
 193         /*
 194          * For IMPLICIT tagging the length should match the original length
 195          * and constructed flag should be consistent.
 196          */
 197         if (r & 0x1) {
 198             /* Indefinite length constructed */
 199             hdr_constructed = 2;
 200             hdr_len = 0;
 201         } else
 202             /* Just retain constructed flag */
 203             hdr_constructed = r & V_ASN1_CONSTRUCTED;
 204         /*
 205          * Work out new length with IMPLICIT tag: ignore constructed because
 206          * it will mess up if indefinite length
 207          */
 208         len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag);
 209     } else
 210         len = cpy_len;
 211
 212     /* Work out length in any EXPLICIT, starting from end */
 213
 214     for (i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1;
 215          i < asn1_tags.exp_count; i++, etmp--) {
 216         /* Content length: number of content octets + any padding */
 217         len += etmp->exp_pad;
 218         etmp->exp_len = len;
 219         /* Total object length: length including new header */
 220         len = ASN1_object_size(0, len, etmp->exp_tag);
 221     }
 222
 223     /* Allocate buffer for new encoding */
 224
 225     new_der = OPENSSL_malloc(len);
 226     if (!new_der)
 227         goto err;
 228
 229     /* Generate tagged encoding */
 230
 231     p = new_der;
 232
 233     /* Output explicit tags first */
 234
 235     for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count;
 236          i++, etmp++) {
 237         ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len,
 238                         etmp->exp_tag, etmp->exp_class);
 239         if (etmp->exp_pad)
 240             *p++ = 0;
 241     }
 242
 243     /* If IMPLICIT, output tag */
 244
 245     if (asn1_tags.imp_tag != -1) {
 246         if (asn1_tags.imp_class == V_ASN1_UNIVERSAL
 247             && (asn1_tags.imp_tag == V_ASN1_SEQUENCE
 248                 || asn1_tags.imp_tag == V_ASN1_SET))
 249             hdr_constructed = V_ASN1_CONSTRUCTED;
 250         ASN1_put_object(&p, hdr_constructed, hdr_len,
 251                         asn1_tags.imp_tag, asn1_tags.imp_class);
 252     }
 253
 254     /* Copy across original encoding */
 255     memcpy(p, cpy_start, cpy_len);
 256
 257     cp = new_der;
 258
 259     /* Obtain new ASN1_TYPE structure */
 260     ret = d2i_ASN1_TYPE(NULL, &cp, len);
 261
 262  err:
 263     if (orig_der)
 264         OPENSSL_free(orig_der);
 265     if (new_der)
 266         OPENSSL_free(new_der);
 267
 268     return ret;
 269
 270 }
 271
 272 static int asn1_cb(const char *elem, int len, void *bitstr)
 273 {
 274     tag_exp_arg *arg = bitstr;
 275     int i;
 276     int utype;
 277     int vlen = 0;
 278     const char *p, *vstart = NULL;
 279
 280     int tmp_tag, tmp_class;
 281
 282     if (elem == NULL)
 283         return 0;
 284
 285     for (i = 0, p = elem; i < len; p++, i++) {
 286         /* Look for the ':' in name value pairs */
 287         if (*p == ':') {
 288             vstart = p + 1;
 289             vlen = len - (vstart - elem);
 290             len = p - elem;
 291             break;
 292         }
 293     }
 294
 295     utype = asn1_str2tag(elem, len);
 296
 297     if (utype == -1) {
 298         ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKNOWN_TAG);
 299         ERR_add_error_data(2, "tag=", elem);
 300         return -1;
 301     }
 302
 303     /* If this is not a modifier mark end of string and exit */
 304     if (!(utype & ASN1_GEN_FLAG)) {
 305         arg->utype = utype;
 306         arg->str = vstart;
 307         /* If no value and not end of string, error */
 308         if (!vstart && elem[len]) {
 309             ASN1err(ASN1_F_ASN1_CB, ASN1_R_MISSING_VALUE);
 310             return -1;
 311         }
 312         return 0;
 313     }
 314
 315     switch (utype) {
 316
 317     case ASN1_GEN_FLAG_IMP:
 318         /* Check for illegal multiple IMPLICIT tagging */
 319         if (arg->imp_tag != -1) {
 320             ASN1err(ASN1_F_ASN1_CB, ASN1_R_ILLEGAL_NESTED_TAGGING);
 321             return -1;
 322         }
 323         if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class))
 324             return -1;
 325         break;
 326
 327     case ASN1_GEN_FLAG_EXP:
 328
 329         if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class))
 330             return -1;
 331         if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0))
 332             return -1;
 333         break;
 334
 335     case ASN1_GEN_FLAG_SEQWRAP:
 336         if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1))
 337             return -1;
 338         break;
 339
 340     case ASN1_GEN_FLAG_SETWRAP:
 341         if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1))
 342             return -1;
 343         break;
 344
 345     case ASN1_GEN_FLAG_BITWRAP:
 346         if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1))
 347             return -1;
 348         break;
 349
 350     case ASN1_GEN_FLAG_OCTWRAP:
 351         if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1))
 352             return -1;
 353         break;
 354
 355     case ASN1_GEN_FLAG_FORMAT:
 356         if(!vstart) {
 357             ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKNOWN_FORMAT);
 358             return -1;
 359         }
 360         if (!strncmp(vstart, "ASCII", 5))
 361             arg->format = ASN1_GEN_FORMAT_ASCII;
 362         else if (!strncmp(vstart, "UTF8", 4))
 363             arg->format = ASN1_GEN_FORMAT_UTF8;
 364         else if (!strncmp(vstart, "HEX", 3))
 365             arg->format = ASN1_GEN_FORMAT_HEX;
 366         else if (!strncmp(vstart, "BITLIST", 7))
 367             arg->format = ASN1_GEN_FORMAT_BITLIST;
 368         else {
 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         ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_NUMBER);
 393         return 0;
 394     }
 395     *ptag = tag_num;
 396     /* If we have non numeric characters, parse them */
 397     if (eptr)
 398         vlen -= eptr - vstart;
 399     else
 400         vlen = 0;
 401     if (vlen) {
 402         switch (*eptr) {
 403
 404         case 'U':
 405             *pclass = V_ASN1_UNIVERSAL;
 406             break;
 407
 408         case 'A':
 409             *pclass = V_ASN1_APPLICATION;
 410             break;
 411
 412         case 'P':
 413             *pclass = V_ASN1_PRIVATE;
 414             break;
 415
 416         case 'C':
 417             *pclass = V_ASN1_CONTEXT_SPECIFIC;
 418             break;
 419
 420         default:
 421             erch[0] = *eptr;
 422             erch[1] = 0;
 423             ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_MODIFIER);
 424             ERR_add_error_data(2, "Char=", erch);
 425             return 0;
 426             break;
 427
 428         }
 429     } else
 430         *pclass = V_ASN1_CONTEXT_SPECIFIC;
 431
 432     return 1;
 433
 434 }
 435
 436 /* Handle multiple types: SET and SEQUENCE */
 437
 438 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf)
 439 {
 440     ASN1_TYPE *ret = NULL;
 441     STACK_OF(ASN1_TYPE) *sk = NULL;
 442     STACK_OF(CONF_VALUE) *sect = NULL;
 443     unsigned char *der = NULL;
 444     int derlen;
 445     int i;
 446     sk = sk_ASN1_TYPE_new_null();
 447     if (!sk)
 448         goto bad;
 449     if (section) {
 450         if (!cnf)
 451             goto bad;
 452         sect = X509V3_get_section(cnf, (char *)section);
 453         if (!sect)
 454             goto bad;
 455         for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
 456             ASN1_TYPE *typ =
 457                 ASN1_generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf);
 458             if (!typ)
 459                 goto bad;
 460             if (!sk_ASN1_TYPE_push(sk, typ))
 461                 goto bad;
 462         }
 463     }
 464
 465     /*
 466      * Now we has a STACK of the components, convert to the correct form
 467      */
 468
 469     if (utype == V_ASN1_SET)
 470         derlen = i2d_ASN1_SET_ANY(sk, &der);
 471     else
 472         derlen = i2d_ASN1_SEQUENCE_ANY(sk, &der);
 473
 474     if (derlen < 0)
 475         goto bad;
 476
 477     if (!(ret = ASN1_TYPE_new()))
 478         goto bad;
 479
 480     if (!(ret->value.asn1_string = ASN1_STRING_type_new(utype)))
 481         goto bad;
 482
 483     ret->type = utype;
 484
 485     ret->value.asn1_string->data = der;
 486     ret->value.asn1_string->length = derlen;
 487
 488     der = NULL;
 489
 490  bad:
 491
 492     if (der)
 493         OPENSSL_free(der);
 494
 495     if (sk)
 496         sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free);
 497     if (sect)
 498         X509V3_section_free(cnf, sect);
 499
 500     return ret;
 501 }
 502
 503 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class,
 504                       int exp_constructed, int exp_pad, int imp_ok)
 505 {
 506     tag_exp_type *exp_tmp;
 507     /* Can only have IMPLICIT if permitted */
 508     if ((arg->imp_tag != -1) && !imp_ok) {
 509         ASN1err(ASN1_F_APPEND_EXP, ASN1_R_ILLEGAL_IMPLICIT_TAG);
 510         return 0;
 511     }
 512
 513     if (arg->exp_count == ASN1_FLAG_EXP_MAX) {
 514         ASN1err(ASN1_F_APPEND_EXP, ASN1_R_DEPTH_EXCEEDED);
 515         return 0;
 516     }
 517
 518     exp_tmp = &arg->exp_list[arg->exp_count++];
 519
 520     /*
 521      * If IMPLICIT set tag to implicit value then reset implicit tag since it
 522      * has been used.
 523      */
 524     if (arg->imp_tag != -1) {
 525         exp_tmp->exp_tag = arg->imp_tag;
 526         exp_tmp->exp_class = arg->imp_class;
 527         arg->imp_tag = -1;
 528         arg->imp_class = -1;
 529     } else {
 530         exp_tmp->exp_tag = exp_tag;
 531         exp_tmp->exp_class = exp_class;
 532     }
 533     exp_tmp->exp_constructed = exp_constructed;
 534     exp_tmp->exp_pad = exp_pad;
 535
 536     return 1;
 537 }
 538
 539 static int asn1_str2tag(const char *tagstr, int len)
 540 {
 541     unsigned int i;
 542     static const struct tag_name_st *tntmp, tnst[] = {
 543         ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN),
 544         ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN),
 545         ASN1_GEN_STR("NULL", V_ASN1_NULL),
 546         ASN1_GEN_STR("INT", V_ASN1_INTEGER),
 547         ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER),
 548         ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED),
 549         ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED),
 550         ASN1_GEN_STR("OID", V_ASN1_OBJECT),
 551         ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT),
 552         ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME),
 553         ASN1_GEN_STR("UTC", V_ASN1_UTCTIME),
 554         ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME),
 555         ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME),
 556         ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING),
 557         ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING),
 558         ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING),
 559         ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING),
 560         ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING),
 561         ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING),
 562         ASN1_GEN_STR("IA5", V_ASN1_IA5STRING),
 563         ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING),
 564         ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING),
 565         ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING),
 566         ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING),
 567         ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING),
 568         ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING),
 569         ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING),
 570         ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING),
 571         ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING),
 572         ASN1_GEN_STR("T61", V_ASN1_T61STRING),
 573         ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING),
 574         ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING),
 575         ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING),
 576         ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING),
 577         ASN1_GEN_STR("NUMERIC", V_ASN1_NUMERICSTRING),
 578         ASN1_GEN_STR("NUMERICSTRING", V_ASN1_NUMERICSTRING),
 579
 580         /* Special cases */
 581         ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE),
 582         ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE),
 583         ASN1_GEN_STR("SET", V_ASN1_SET),
 584         /* type modifiers */
 585         /* Explicit tag */
 586         ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP),
 587         ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP),
 588         /* Implicit tag */
 589         ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP),
 590         ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP),
 591         /* OCTET STRING wrapper */
 592         ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP),
 593         /* SEQUENCE wrapper */
 594         ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP),
 595         /* SET wrapper */
 596         ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP),
 597         /* BIT STRING wrapper */
 598         ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP),
 599         ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT),
 600         ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT),
 601     };
 602
 603     if (len == -1)
 604         len = strlen(tagstr);
 605
 606     tntmp = tnst;
 607     for (i = 0; i < sizeof(tnst) / sizeof(struct tag_name_st); i++, tntmp++) {
 608         if ((len == tntmp->len) && !strncmp(tntmp->strnam, tagstr, len))
 609             return tntmp->tag;
 610     }
 611
 612     return -1;
 613 }
 614
 615 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype)
 616 {
 617     ASN1_TYPE *atmp = NULL;
 618
 619     CONF_VALUE vtmp;
 620
 621     unsigned char *rdata;
 622     long rdlen;
 623
 624     int no_unused = 1;
 625
 626     if (!(atmp = ASN1_TYPE_new())) {
 627         ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 628         return NULL;
 629     }
 630
 631     if (!str)
 632         str = "";
 633
 634     switch (utype) {
 635
 636     case V_ASN1_NULL:
 637         if (str && *str) {
 638             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_NULL_VALUE);
 639             goto bad_form;
 640         }
 641         break;
 642
 643     case V_ASN1_BOOLEAN:
 644         if (format != ASN1_GEN_FORMAT_ASCII) {
 645             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_NOT_ASCII_FORMAT);
 646             goto bad_form;
 647         }
 648         vtmp.name = NULL;
 649         vtmp.section = NULL;
 650         vtmp.value = (char *)str;
 651         if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean)) {
 652             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BOOLEAN);
 653             goto bad_str;
 654         }
 655         break;
 656
 657     case V_ASN1_INTEGER:
 658     case V_ASN1_ENUMERATED:
 659         if (format != ASN1_GEN_FORMAT_ASCII) {
 660             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_INTEGER_NOT_ASCII_FORMAT);
 661             goto bad_form;
 662         }
 663         if (!(atmp->value.integer = s2i_ASN1_INTEGER(NULL, (char *)str))) {
 664             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_INTEGER);
 665             goto bad_str;
 666         }
 667         break;
 668
 669     case V_ASN1_OBJECT:
 670         if (format != ASN1_GEN_FORMAT_ASCII) {
 671             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_OBJECT_NOT_ASCII_FORMAT);
 672             goto bad_form;
 673         }
 674         if (!(atmp->value.object = OBJ_txt2obj(str, 0))) {
 675             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_OBJECT);
 676             goto bad_str;
 677         }
 678         break;
 679
 680     case V_ASN1_UTCTIME:
 681     case V_ASN1_GENERALIZEDTIME:
 682         if (format != ASN1_GEN_FORMAT_ASCII) {
 683             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_TIME_NOT_ASCII_FORMAT);
 684             goto bad_form;
 685         }
 686         if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
 687             ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 688             goto bad_str;
 689         }
 690         if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) {
 691             ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 692             goto bad_str;
 693         }
 694         atmp->value.asn1_string->type = utype;
 695         if (!ASN1_TIME_check(atmp->value.asn1_string)) {
 696             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_TIME_VALUE);
 697             goto bad_str;
 698         }
 699
 700         break;
 701
 702     case V_ASN1_BMPSTRING:
 703     case V_ASN1_PRINTABLESTRING:
 704     case V_ASN1_IA5STRING:
 705     case V_ASN1_T61STRING:
 706     case V_ASN1_UTF8STRING:
 707     case V_ASN1_VISIBLESTRING:
 708     case V_ASN1_UNIVERSALSTRING:
 709     case V_ASN1_GENERALSTRING:
 710     case V_ASN1_NUMERICSTRING:
 711
 712         if (format == ASN1_GEN_FORMAT_ASCII)
 713             format = MBSTRING_ASC;
 714         else if (format == ASN1_GEN_FORMAT_UTF8)
 715             format = MBSTRING_UTF8;
 716         else {
 717             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_FORMAT);
 718             goto bad_form;
 719         }
 720
 721         if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str,
 722                                -1, format, ASN1_tag2bit(utype)) <= 0) {
 723             ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 724             goto bad_str;
 725         }
 726
 727         break;
 728
 729     case V_ASN1_BIT_STRING:
 730
 731     case V_ASN1_OCTET_STRING:
 732
 733         if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
 734             ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
 735             goto bad_form;
 736         }
 737
 738         if (format == ASN1_GEN_FORMAT_HEX) {
 739
 740             if (!(rdata = string_to_hex((char *)str, &rdlen))) {
 741                 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_HEX);
 742                 goto bad_str;
 743             }
 744
 745             atmp->value.asn1_string->data = rdata;
 746             atmp->value.asn1_string->length = rdlen;
 747             atmp->value.asn1_string->type = utype;
 748
 749         } else if (format == ASN1_GEN_FORMAT_ASCII)
 750             ASN1_STRING_set(atmp->value.asn1_string, str, -1);
 751         else if ((format == ASN1_GEN_FORMAT_BITLIST)
 752                  && (utype == V_ASN1_BIT_STRING)) {
 753             if (!CONF_parse_list
 754                 (str, ',', 1, bitstr_cb, atmp->value.bit_string)) {
 755                 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_LIST_ERROR);
 756                 goto bad_str;
 757             }
 758             no_unused = 0;
 759
 760         } else {
 761             ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BITSTRING_FORMAT);
 762             goto bad_form;
 763         }
 764
 765         if ((utype == V_ASN1_BIT_STRING) && no_unused) {
 766             atmp->value.asn1_string->flags
 767                 &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
 768             atmp->value.asn1_string->flags |= ASN1_STRING_FLAG_BITS_LEFT;
 769         }
 770
 771         break;
 772
 773     default:
 774         ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_UNSUPPORTED_TYPE);
 775         goto bad_str;
 776         break;
 777     }
 778
 779     atmp->type = utype;
 780     return atmp;
 781
 782  bad_str:
 783     ERR_add_error_data(2, "string=", str);
 784  bad_form:
 785
 786     ASN1_TYPE_free(atmp);
 787     return NULL;
 788
 789 }
 790
 791 static int bitstr_cb(const char *elem, int len, void *bitstr)
 792 {
 793     long bitnum;
 794     char *eptr;
 795     if (!elem)
 796         return 0;
 797     bitnum = strtoul(elem, &eptr, 10);
 798     if (eptr && *eptr && (eptr != elem + len))
 799         return 0;
 800     if (bitnum < 0) {
 801         ASN1err(ASN1_F_BITSTR_CB, ASN1_R_INVALID_NUMBER);
 802         return 0;
 803     }
 804     if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1)) {
 805         ASN1err(ASN1_F_BITSTR_CB, ERR_R_MALLOC_FAILURE);
 806         return 0;
 807     }
 808     return 1;
 809 }