1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #include <openssl/x509.h> 58 59 #include <openssl/asn1.h> 60 #include <openssl/err.h> 61 #include <openssl/mem.h> 62 #include <openssl/obj.h> 63 #include <openssl/x509v3.h> 64 65 66 #define ASN1_GEN_FLAG 0x10000 67 #define ASN1_GEN_FLAG_IMP (ASN1_GEN_FLAG|1) 68 #define ASN1_GEN_FLAG_EXP (ASN1_GEN_FLAG|2) 69 #define ASN1_GEN_FLAG_TAG (ASN1_GEN_FLAG|3) 70 #define ASN1_GEN_FLAG_BITWRAP (ASN1_GEN_FLAG|4) 71 #define ASN1_GEN_FLAG_OCTWRAP (ASN1_GEN_FLAG|5) 72 #define ASN1_GEN_FLAG_SEQWRAP (ASN1_GEN_FLAG|6) 73 #define ASN1_GEN_FLAG_SETWRAP (ASN1_GEN_FLAG|7) 74 #define ASN1_GEN_FLAG_FORMAT (ASN1_GEN_FLAG|8) 75 76 #define ASN1_GEN_STR(str,val) {str, sizeof(str) - 1, val} 77 78 #define ASN1_FLAG_EXP_MAX 20 79 80 /* Input formats */ 81 82 /* ASCII: default */ 83 #define ASN1_GEN_FORMAT_ASCII 1 84 /* UTF8 */ 85 #define ASN1_GEN_FORMAT_UTF8 2 86 /* Hex */ 87 #define ASN1_GEN_FORMAT_HEX 3 88 /* List of bits */ 89 #define ASN1_GEN_FORMAT_BITLIST 4 90 91 92 struct tag_name_st 93 { 94 const char *strnam; 95 int len; 96 int tag; 97 }; 98 99 typedef struct 100 { 101 int exp_tag; 102 int exp_class; 103 int exp_constructed; 104 int exp_pad; 105 long exp_len; 106 } tag_exp_type; 107 108 typedef struct 109 { 110 int imp_tag; 111 int imp_class; 112 int utype; 113 int format; 114 const char *str; 115 tag_exp_type exp_list[ASN1_FLAG_EXP_MAX]; 116 int exp_count; 117 } tag_exp_arg; 118 119 static int bitstr_cb(const char *elem, int len, void *bitstr); 120 static int asn1_cb(const char *elem, int len, void *bitstr); 121 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, int exp_constructed, int exp_pad, int imp_ok); 122 static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass); 123 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf); 124 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype); 125 static int asn1_str2tag(const char *tagstr, int len); 126 127 ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf) 128 { 129 X509V3_CTX cnf; 130 131 if (!nconf) 132 return ASN1_generate_v3(str, NULL); 133 134 X509V3_set_nconf(&cnf, nconf); 135 return ASN1_generate_v3(str, &cnf); 136 } 137 138 ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf) 139 { 140 ASN1_TYPE *ret; 141 tag_exp_arg asn1_tags; 142 tag_exp_type *etmp; 143 144 int i, len; 145 146 unsigned char *orig_der = NULL, *new_der = NULL; 147 const unsigned char *cpy_start; 148 unsigned char *p; 149 const unsigned char *cp; 150 int cpy_len; 151 long hdr_len; 152 int hdr_constructed = 0, hdr_tag, hdr_class; 153 int r; 154 155 asn1_tags.imp_tag = -1; 156 asn1_tags.imp_class = -1; 157 asn1_tags.format = ASN1_GEN_FORMAT_ASCII; 158 asn1_tags.exp_count = 0; 159 if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0) 160 return NULL; 161 162 if ((asn1_tags.utype == V_ASN1_SEQUENCE) || (asn1_tags.utype == V_ASN1_SET)) 163 { 164 if (!cnf) 165 { 166 OPENSSL_PUT_ERROR(X509, ASN1_generate_v3, ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG); 167 return NULL; 168 } 169 ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf); 170 } 171 else 172 ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype); 173 174 if (!ret) 175 return NULL; 176 177 /* If no tagging return base type */ 178 if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0)) 179 return ret; 180 181 /* Generate the encoding */ 182 cpy_len = i2d_ASN1_TYPE(ret, &orig_der); 183 ASN1_TYPE_free(ret); 184 ret = NULL; 185 /* Set point to start copying for modified encoding */ 186 cpy_start = orig_der; 187 188 /* Do we need IMPLICIT tagging? */ 189 if (asn1_tags.imp_tag != -1) 190 { 191 /* If IMPLICIT we will replace the underlying tag */ 192 /* Skip existing tag+len */ 193 r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class, cpy_len); 194 if (r & 0x80) 195 goto err; 196 /* Update copy length */ 197 cpy_len -= cpy_start - orig_der; 198 /* For IMPLICIT tagging the length should match the 199 * original length and constructed flag should be 200 * consistent. 201 */ 202 if (r & 0x1) 203 { 204 /* Indefinite length constructed */ 205 hdr_constructed = 2; 206 hdr_len = 0; 207 } 208 else 209 /* Just retain constructed flag */ 210 hdr_constructed = r & V_ASN1_CONSTRUCTED; 211 /* Work out new length with IMPLICIT tag: ignore constructed 212 * because it will mess up if indefinite length 213 */ 214 len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag); 215 } 216 else 217 len = cpy_len; 218 219 /* Work out length in any EXPLICIT, starting from end */ 220 221 for(i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1; i < asn1_tags.exp_count; i++, etmp--) 222 { 223 /* Content length: number of content octets + any padding */ 224 len += etmp->exp_pad; 225 etmp->exp_len = len; 226 /* Total object length: length including new header */ 227 len = ASN1_object_size(0, len, etmp->exp_tag); 228 } 229 230 /* Allocate buffer for new encoding */ 231 232 new_der = OPENSSL_malloc(len); 233 if (!new_der) 234 goto err; 235 236 /* Generate tagged encoding */ 237 238 p = new_der; 239 240 /* Output explicit tags first */ 241 242 for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count; i++, etmp++) 243 { 244 ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len, 245 etmp->exp_tag, etmp->exp_class); 246 if (etmp->exp_pad) 247 *p++ = 0; 248 } 249 250 /* If IMPLICIT, output tag */ 251 252 if (asn1_tags.imp_tag != -1) 253 { 254 if (asn1_tags.imp_class == V_ASN1_UNIVERSAL 255 && (asn1_tags.imp_tag == V_ASN1_SEQUENCE 256 || asn1_tags.imp_tag == V_ASN1_SET) ) 257 hdr_constructed = V_ASN1_CONSTRUCTED; 258 ASN1_put_object(&p, hdr_constructed, hdr_len, 259 asn1_tags.imp_tag, asn1_tags.imp_class); 260 } 261 262 /* Copy across original encoding */ 263 memcpy(p, cpy_start, cpy_len); 264 265 cp = new_der; 266 267 /* Obtain new ASN1_TYPE structure */ 268 ret = d2i_ASN1_TYPE(NULL, &cp, len); 269 270 err: 271 if (orig_der) 272 OPENSSL_free(orig_der); 273 if (new_der) 274 OPENSSL_free(new_der); 275 276 return ret; 277 278 } 279 280 static int asn1_cb(const char *elem, int len, void *bitstr) 281 { 282 tag_exp_arg *arg = bitstr; 283 int i; 284 int utype; 285 int vlen = 0; 286 const char *p, *vstart = NULL; 287 288 int tmp_tag, tmp_class; 289 290 for(i = 0, p = elem; i < len; p++, i++) 291 { 292 /* Look for the ':' in name value pairs */ 293 if (*p == ':') 294 { 295 vstart = p + 1; 296 vlen = len - (vstart - elem); 297 len = p - elem; 298 break; 299 } 300 } 301 302 utype = asn1_str2tag(elem, len); 303 304 if (utype == -1) 305 { 306 OPENSSL_PUT_ERROR(X509, asn1_cb, ASN1_R_UNKNOWN_TAG); 307 ERR_add_error_data(2, "tag=", elem); 308 return -1; 309 } 310 311 /* If this is not a modifier mark end of string and exit */ 312 if (!(utype & ASN1_GEN_FLAG)) 313 { 314 arg->utype = utype; 315 arg->str = vstart; 316 /* If no value and not end of string, error */ 317 if (!vstart && elem[len]) 318 { 319 OPENSSL_PUT_ERROR(X509, asn1_cb, ASN1_R_MISSING_VALUE); 320 return -1; 321 } 322 return 0; 323 } 324 325 switch(utype) 326 { 327 328 case ASN1_GEN_FLAG_IMP: 329 /* Check for illegal multiple IMPLICIT tagging */ 330 if (arg->imp_tag != -1) 331 { 332 OPENSSL_PUT_ERROR(X509, asn1_cb, ASN1_R_ILLEGAL_NESTED_TAGGING); 333 return -1; 334 } 335 if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class)) 336 return -1; 337 break; 338 339 case ASN1_GEN_FLAG_EXP: 340 341 if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class)) 342 return -1; 343 if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0)) 344 return -1; 345 break; 346 347 case ASN1_GEN_FLAG_SEQWRAP: 348 if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1)) 349 return -1; 350 break; 351 352 case ASN1_GEN_FLAG_SETWRAP: 353 if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1)) 354 return -1; 355 break; 356 357 case ASN1_GEN_FLAG_BITWRAP: 358 if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1)) 359 return -1; 360 break; 361 362 case ASN1_GEN_FLAG_OCTWRAP: 363 if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1)) 364 return -1; 365 break; 366 367 case ASN1_GEN_FLAG_FORMAT: 368 if (!strncmp(vstart, "ASCII", 5)) 369 arg->format = ASN1_GEN_FORMAT_ASCII; 370 else if (!strncmp(vstart, "UTF8", 4)) 371 arg->format = ASN1_GEN_FORMAT_UTF8; 372 else if (!strncmp(vstart, "HEX", 3)) 373 arg->format = ASN1_GEN_FORMAT_HEX; 374 else if (!strncmp(vstart, "BITLIST", 3)) 375 arg->format = ASN1_GEN_FORMAT_BITLIST; 376 else 377 { 378 OPENSSL_PUT_ERROR(X509, asn1_cb, ASN1_R_UNKOWN_FORMAT); 379 return -1; 380 } 381 break; 382 383 } 384 385 return 1; 386 387 } 388 389 static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass) 390 { 391 char erch[2]; 392 long tag_num; 393 char *eptr; 394 if (!vstart) 395 return 0; 396 tag_num = strtoul(vstart, &eptr, 10); 397 /* Check we haven't gone past max length: should be impossible */ 398 if (eptr && *eptr && (eptr > vstart + vlen)) 399 return 0; 400 if (tag_num < 0) 401 { 402 OPENSSL_PUT_ERROR(X509, parse_tagging, ASN1_R_INVALID_NUMBER); 403 return 0; 404 } 405 *ptag = tag_num; 406 /* If we have non numeric characters, parse them */ 407 if (eptr) 408 vlen -= eptr - vstart; 409 else 410 vlen = 0; 411 if (vlen) 412 { 413 switch (*eptr) 414 { 415 416 case 'U': 417 *pclass = V_ASN1_UNIVERSAL; 418 break; 419 420 case 'A': 421 *pclass = V_ASN1_APPLICATION; 422 break; 423 424 case 'P': 425 *pclass = V_ASN1_PRIVATE; 426 break; 427 428 case 'C': 429 *pclass = V_ASN1_CONTEXT_SPECIFIC; 430 break; 431 432 default: 433 erch[0] = *eptr; 434 erch[1] = 0; 435 OPENSSL_PUT_ERROR(X509, parse_tagging, ASN1_R_INVALID_MODIFIER); 436 ERR_add_error_data(2, "Char=", erch); 437 return 0; 438 break; 439 440 } 441 } 442 else 443 *pclass = V_ASN1_CONTEXT_SPECIFIC; 444 445 return 1; 446 447 } 448 449 /* Handle multiple types: SET and SEQUENCE */ 450 451 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf) 452 { 453 ASN1_TYPE *ret = NULL; 454 STACK_OF(ASN1_TYPE) *sk = NULL; 455 STACK_OF(CONF_VALUE) *sect = NULL; 456 unsigned char *der = NULL; 457 int derlen; 458 size_t i; 459 sk = sk_ASN1_TYPE_new_null(); 460 if (!sk) 461 goto bad; 462 if (section) 463 { 464 if (!cnf) 465 goto bad; 466 sect = X509V3_get_section(cnf, (char *)section); 467 if (!sect) 468 goto bad; 469 for (i = 0; i < sk_CONF_VALUE_num(sect); i++) 470 { 471 ASN1_TYPE *typ = ASN1_generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf); 472 if (!typ) 473 goto bad; 474 if (!sk_ASN1_TYPE_push(sk, typ)) 475 goto bad; 476 } 477 } 478 479 /* Now we has a STACK of the components, convert to the correct form */ 480 481 if (utype == V_ASN1_SET) 482 derlen = i2d_ASN1_SET_ANY(sk, &der); 483 else 484 derlen = i2d_ASN1_SEQUENCE_ANY(sk, &der); 485 486 if (derlen < 0) 487 goto bad; 488 489 if (!(ret = ASN1_TYPE_new())) 490 goto bad; 491 492 if (!(ret->value.asn1_string = ASN1_STRING_type_new(utype))) 493 goto bad; 494 495 ret->type = utype; 496 497 ret->value.asn1_string->data = der; 498 ret->value.asn1_string->length = derlen; 499 500 der = NULL; 501 502 bad: 503 504 if (der) 505 OPENSSL_free(der); 506 507 if (sk) 508 sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free); 509 if (sect) 510 X509V3_section_free(cnf, sect); 511 512 return ret; 513 } 514 515 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, int exp_constructed, int exp_pad, int imp_ok) 516 { 517 tag_exp_type *exp_tmp; 518 /* Can only have IMPLICIT if permitted */ 519 if ((arg->imp_tag != -1) && !imp_ok) 520 { 521 OPENSSL_PUT_ERROR(X509, append_exp, ASN1_R_ILLEGAL_IMPLICIT_TAG); 522 return 0; 523 } 524 525 if (arg->exp_count == ASN1_FLAG_EXP_MAX) 526 { 527 OPENSSL_PUT_ERROR(X509, append_exp, ASN1_R_DEPTH_EXCEEDED); 528 return 0; 529 } 530 531 exp_tmp = &arg->exp_list[arg->exp_count++]; 532 533 /* If IMPLICIT set tag to implicit value then 534 * reset implicit tag since it has been used. 535 */ 536 if (arg->imp_tag != -1) 537 { 538 exp_tmp->exp_tag = arg->imp_tag; 539 exp_tmp->exp_class = arg->imp_class; 540 arg->imp_tag = -1; 541 arg->imp_class = -1; 542 } 543 else 544 { 545 exp_tmp->exp_tag = exp_tag; 546 exp_tmp->exp_class = exp_class; 547 } 548 exp_tmp->exp_constructed = exp_constructed; 549 exp_tmp->exp_pad = exp_pad; 550 551 return 1; 552 } 553 554 555 static int asn1_str2tag(const char *tagstr, int len) 556 { 557 unsigned int i; 558 static const struct tag_name_st *tntmp, tnst [] = { 559 ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN), 560 ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN), 561 ASN1_GEN_STR("NULL", V_ASN1_NULL), 562 ASN1_GEN_STR("INT", V_ASN1_INTEGER), 563 ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER), 564 ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED), 565 ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED), 566 ASN1_GEN_STR("OID", V_ASN1_OBJECT), 567 ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT), 568 ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME), 569 ASN1_GEN_STR("UTC", V_ASN1_UTCTIME), 570 ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME), 571 ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME), 572 ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING), 573 ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING), 574 ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING), 575 ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING), 576 ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING), 577 ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING), 578 ASN1_GEN_STR("IA5", V_ASN1_IA5STRING), 579 ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING), 580 ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING), 581 ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING), 582 ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING), 583 ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING), 584 ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING), 585 ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING), 586 ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING), 587 ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING), 588 ASN1_GEN_STR("T61", V_ASN1_T61STRING), 589 ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING), 590 ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING), 591 ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING), 592 ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING), 593 ASN1_GEN_STR("NUMERIC", V_ASN1_NUMERICSTRING), 594 ASN1_GEN_STR("NUMERICSTRING", V_ASN1_NUMERICSTRING), 595 596 /* Special cases */ 597 ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE), 598 ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE), 599 ASN1_GEN_STR("SET", V_ASN1_SET), 600 /* type modifiers */ 601 /* Explicit tag */ 602 ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP), 603 ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP), 604 /* Implicit tag */ 605 ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP), 606 ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP), 607 /* OCTET STRING wrapper */ 608 ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP), 609 /* SEQUENCE wrapper */ 610 ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP), 611 /* SET wrapper */ 612 ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP), 613 /* BIT STRING wrapper */ 614 ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP), 615 ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT), 616 ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT), 617 }; 618 619 if (len == -1) 620 len = strlen(tagstr); 621 622 tntmp = tnst; 623 for (i = 0; i < sizeof(tnst) / sizeof(struct tag_name_st); i++, tntmp++) 624 { 625 if ((len == tntmp->len) && !strncmp(tntmp->strnam, tagstr, len)) 626 return tntmp->tag; 627 } 628 629 return -1; 630 } 631 632 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype) 633 { 634 ASN1_TYPE *atmp = NULL; 635 636 CONF_VALUE vtmp; 637 638 unsigned char *rdata; 639 long rdlen; 640 641 int no_unused = 1; 642 643 if (!(atmp = ASN1_TYPE_new())) 644 { 645 OPENSSL_PUT_ERROR(X509, asn1_str2type, ERR_R_MALLOC_FAILURE); 646 return NULL; 647 } 648 649 if (!str) 650 str = ""; 651 652 switch(utype) 653 { 654 655 case V_ASN1_NULL: 656 if (str && *str) 657 { 658 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_ILLEGAL_NULL_VALUE); 659 goto bad_form; 660 } 661 break; 662 663 case V_ASN1_BOOLEAN: 664 if (format != ASN1_GEN_FORMAT_ASCII) 665 { 666 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_NOT_ASCII_FORMAT); 667 goto bad_form; 668 } 669 vtmp.name = NULL; 670 vtmp.section = NULL; 671 vtmp.value = (char *)str; 672 if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean)) 673 { 674 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_ILLEGAL_BOOLEAN); 675 goto bad_str; 676 } 677 break; 678 679 case V_ASN1_INTEGER: 680 case V_ASN1_ENUMERATED: 681 if (format != ASN1_GEN_FORMAT_ASCII) 682 { 683 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_INTEGER_NOT_ASCII_FORMAT); 684 goto bad_form; 685 } 686 if (!(atmp->value.integer = s2i_ASN1_INTEGER(NULL, (char *)str))) 687 { 688 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_ILLEGAL_INTEGER); 689 goto bad_str; 690 } 691 break; 692 693 case V_ASN1_OBJECT: 694 if (format != ASN1_GEN_FORMAT_ASCII) 695 { 696 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_OBJECT_NOT_ASCII_FORMAT); 697 goto bad_form; 698 } 699 if (!(atmp->value.object = OBJ_txt2obj(str, 0))) 700 { 701 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_ILLEGAL_OBJECT); 702 goto bad_str; 703 } 704 break; 705 706 case V_ASN1_UTCTIME: 707 case V_ASN1_GENERALIZEDTIME: 708 if (format != ASN1_GEN_FORMAT_ASCII) 709 { 710 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_TIME_NOT_ASCII_FORMAT); 711 goto bad_form; 712 } 713 if (!(atmp->value.asn1_string = ASN1_STRING_new())) 714 { 715 OPENSSL_PUT_ERROR(X509, asn1_str2type, ERR_R_MALLOC_FAILURE); 716 goto bad_str; 717 } 718 if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) 719 { 720 OPENSSL_PUT_ERROR(X509, asn1_str2type, ERR_R_MALLOC_FAILURE); 721 goto bad_str; 722 } 723 atmp->value.asn1_string->type = utype; 724 if (!ASN1_TIME_check(atmp->value.asn1_string)) 725 { 726 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_ILLEGAL_TIME_VALUE); 727 goto bad_str; 728 } 729 730 break; 731 732 case V_ASN1_BMPSTRING: 733 case V_ASN1_PRINTABLESTRING: 734 case V_ASN1_IA5STRING: 735 case V_ASN1_T61STRING: 736 case V_ASN1_UTF8STRING: 737 case V_ASN1_VISIBLESTRING: 738 case V_ASN1_UNIVERSALSTRING: 739 case V_ASN1_GENERALSTRING: 740 case V_ASN1_NUMERICSTRING: 741 742 if (format == ASN1_GEN_FORMAT_ASCII) 743 format = MBSTRING_ASC; 744 else if (format == ASN1_GEN_FORMAT_UTF8) 745 format = MBSTRING_UTF8; 746 else 747 { 748 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_ILLEGAL_FORMAT); 749 goto bad_form; 750 } 751 752 753 if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str, 754 -1, format, ASN1_tag2bit(utype)) <= 0) 755 { 756 OPENSSL_PUT_ERROR(X509, asn1_str2type, ERR_R_MALLOC_FAILURE); 757 goto bad_str; 758 } 759 760 761 break; 762 763 case V_ASN1_BIT_STRING: 764 765 case V_ASN1_OCTET_STRING: 766 767 if (!(atmp->value.asn1_string = ASN1_STRING_new())) 768 { 769 OPENSSL_PUT_ERROR(X509, asn1_str2type, ERR_R_MALLOC_FAILURE); 770 goto bad_form; 771 } 772 773 if (format == ASN1_GEN_FORMAT_HEX) 774 { 775 776 if (!(rdata = string_to_hex((char *)str, &rdlen))) 777 { 778 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_ILLEGAL_HEX); 779 goto bad_str; 780 } 781 782 atmp->value.asn1_string->data = rdata; 783 atmp->value.asn1_string->length = rdlen; 784 atmp->value.asn1_string->type = utype; 785 786 } 787 else if (format == ASN1_GEN_FORMAT_ASCII) 788 ASN1_STRING_set(atmp->value.asn1_string, str, -1); 789 else if ((format == ASN1_GEN_FORMAT_BITLIST) && (utype == V_ASN1_BIT_STRING)) 790 { 791 if (!CONF_parse_list(str, ',', 1, bitstr_cb, atmp->value.bit_string)) 792 { 793 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_LIST_ERROR); 794 goto bad_str; 795 } 796 no_unused = 0; 797 798 } 799 else 800 { 801 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_ILLEGAL_BITSTRING_FORMAT); 802 goto bad_form; 803 } 804 805 if ((utype == V_ASN1_BIT_STRING) && no_unused) 806 { 807 atmp->value.asn1_string->flags 808 &= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); 809 atmp->value.asn1_string->flags 810 |= ASN1_STRING_FLAG_BITS_LEFT; 811 } 812 813 814 break; 815 816 default: 817 OPENSSL_PUT_ERROR(X509, asn1_str2type, ASN1_R_UNSUPPORTED_TYPE); 818 goto bad_str; 819 break; 820 } 821 822 823 atmp->type = utype; 824 return atmp; 825 826 827 bad_str: 828 ERR_add_error_data(2, "string=", str); 829 bad_form: 830 831 ASN1_TYPE_free(atmp); 832 return NULL; 833 834 } 835 836 static int bitstr_cb(const char *elem, int len, void *bitstr) 837 { 838 long bitnum; 839 char *eptr; 840 if (!elem) 841 return 0; 842 bitnum = strtoul(elem, &eptr, 10); 843 if (eptr && *eptr && (eptr != elem + len)) 844 return 0; 845 if (bitnum < 0) 846 { 847 OPENSSL_PUT_ERROR(X509, bitstr_cb, ASN1_R_INVALID_NUMBER); 848 return 0; 849 } 850 if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1)) 851 { 852 OPENSSL_PUT_ERROR(X509, bitstr_cb, ERR_R_MALLOC_FAILURE); 853 return 0; 854 } 855 return 1; 856 } 857 858
