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/asn1.h> 58 59 #include <limits.h> 60 #include <string.h> 61 62 #include <openssl/asn1t.h> 63 #include <openssl/mem.h> 64 65 #include "../internal.h" 66 67 68 static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out, 69 const ASN1_ITEM *it, int tag, int aclass); 70 static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out, 71 int skcontlen, const ASN1_ITEM *item, 72 int do_sort, int iclass); 73 static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out, 74 const ASN1_TEMPLATE *tt, int tag, int aclass); 75 static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out, 76 const ASN1_ITEM *it, int flags); 77 78 /* 79 * Top level i2d equivalents: the 'ndef' variant instructs the encoder to use 80 * indefinite length constructed encoding, where appropriate 81 */ 82 83 int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out, 84 const ASN1_ITEM *it) 85 { 86 return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF); 87 } 88 89 int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it) 90 { 91 return asn1_item_flags_i2d(val, out, it, 0); 92 } 93 94 /* 95 * Encode an ASN1 item, this is use by the standard 'i2d' function. 'out' 96 * points to a buffer to output the data to. The new i2d has one additional 97 * feature. If the output buffer is NULL (i.e. *out == NULL) then a buffer is 98 * allocated and populated with the encoding. 99 */ 100 101 static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out, 102 const ASN1_ITEM *it, int flags) 103 { 104 if (out && !*out) { 105 unsigned char *p, *buf; 106 int len; 107 len = ASN1_item_ex_i2d(&val, NULL, it, -1, flags); 108 if (len <= 0) 109 return len; 110 buf = OPENSSL_malloc(len); 111 if (!buf) 112 return -1; 113 p = buf; 114 ASN1_item_ex_i2d(&val, &p, it, -1, flags); 115 *out = buf; 116 return len; 117 } 118 119 return ASN1_item_ex_i2d(&val, out, it, -1, flags); 120 } 121 122 /* 123 * Encode an item, taking care of IMPLICIT tagging (if any). This function 124 * performs the normal item handling: it can be used in external types. 125 */ 126 127 int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, 128 const ASN1_ITEM *it, int tag, int aclass) 129 { 130 const ASN1_TEMPLATE *tt = NULL; 131 unsigned char *p = NULL; 132 int i, seqcontlen, seqlen, ndef = 1; 133 const ASN1_COMPAT_FUNCS *cf; 134 const ASN1_EXTERN_FUNCS *ef; 135 const ASN1_AUX *aux = it->funcs; 136 ASN1_aux_cb *asn1_cb = 0; 137 138 if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval) 139 return 0; 140 141 if (aux && aux->asn1_cb) 142 asn1_cb = aux->asn1_cb; 143 144 switch (it->itype) { 145 146 case ASN1_ITYPE_PRIMITIVE: 147 if (it->templates) 148 return asn1_template_ex_i2d(pval, out, it->templates, 149 tag, aclass); 150 return asn1_i2d_ex_primitive(pval, out, it, tag, aclass); 151 break; 152 153 case ASN1_ITYPE_MSTRING: 154 return asn1_i2d_ex_primitive(pval, out, it, -1, aclass); 155 156 case ASN1_ITYPE_CHOICE: 157 if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL)) 158 return 0; 159 i = asn1_get_choice_selector(pval, it); 160 if ((i >= 0) && (i < it->tcount)) { 161 ASN1_VALUE **pchval; 162 const ASN1_TEMPLATE *chtt; 163 chtt = it->templates + i; 164 pchval = asn1_get_field_ptr(pval, chtt); 165 return asn1_template_ex_i2d(pchval, out, chtt, -1, aclass); 166 } 167 /* Fixme: error condition if selector out of range */ 168 if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL)) 169 return 0; 170 break; 171 172 case ASN1_ITYPE_EXTERN: 173 /* If new style i2d it does all the work */ 174 ef = it->funcs; 175 return ef->asn1_ex_i2d(pval, out, it, tag, aclass); 176 177 case ASN1_ITYPE_COMPAT: 178 /* old style hackery... */ 179 cf = it->funcs; 180 if (out) 181 p = *out; 182 i = cf->asn1_i2d(*pval, out); 183 /* 184 * Fixup for IMPLICIT tag: note this messes up for tags > 30, but so 185 * did the old code. Tags > 30 are very rare anyway. 186 */ 187 if (out && (tag != -1)) 188 *p = aclass | tag | (*p & V_ASN1_CONSTRUCTED); 189 return i; 190 191 case ASN1_ITYPE_NDEF_SEQUENCE: 192 /* Use indefinite length constructed if requested */ 193 if (aclass & ASN1_TFLG_NDEF) 194 ndef = 2; 195 /* fall through */ 196 197 case ASN1_ITYPE_SEQUENCE: 198 i = asn1_enc_restore(&seqcontlen, out, pval, it); 199 /* An error occurred */ 200 if (i < 0) 201 return 0; 202 /* We have a valid cached encoding... */ 203 if (i > 0) 204 return seqcontlen; 205 /* Otherwise carry on */ 206 seqcontlen = 0; 207 /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */ 208 if (tag == -1) { 209 tag = V_ASN1_SEQUENCE; 210 /* Retain any other flags in aclass */ 211 aclass = (aclass & ~ASN1_TFLG_TAG_CLASS) 212 | V_ASN1_UNIVERSAL; 213 } 214 if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL)) 215 return 0; 216 /* First work out sequence content length */ 217 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) { 218 const ASN1_TEMPLATE *seqtt; 219 ASN1_VALUE **pseqval; 220 int tmplen; 221 seqtt = asn1_do_adb(pval, tt, 1); 222 if (!seqtt) 223 return 0; 224 pseqval = asn1_get_field_ptr(pval, seqtt); 225 tmplen = asn1_template_ex_i2d(pseqval, NULL, seqtt, -1, aclass); 226 if (tmplen == -1 || (tmplen > INT_MAX - seqcontlen)) 227 return -1; 228 seqcontlen += tmplen; 229 } 230 231 seqlen = ASN1_object_size(ndef, seqcontlen, tag); 232 if (!out || seqlen == -1) 233 return seqlen; 234 /* Output SEQUENCE header */ 235 ASN1_put_object(out, ndef, seqcontlen, tag, aclass); 236 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) { 237 const ASN1_TEMPLATE *seqtt; 238 ASN1_VALUE **pseqval; 239 seqtt = asn1_do_adb(pval, tt, 1); 240 if (!seqtt) 241 return 0; 242 pseqval = asn1_get_field_ptr(pval, seqtt); 243 /* FIXME: check for errors in enhanced version */ 244 asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass); 245 } 246 if (ndef == 2) 247 ASN1_put_eoc(out); 248 if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL)) 249 return 0; 250 return seqlen; 251 252 default: 253 return 0; 254 255 } 256 return 0; 257 } 258 259 int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out, 260 const ASN1_TEMPLATE *tt) 261 { 262 return asn1_template_ex_i2d(pval, out, tt, -1, 0); 263 } 264 265 static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out, 266 const ASN1_TEMPLATE *tt, int tag, int iclass) 267 { 268 int i, ret, flags, ttag, tclass, ndef; 269 size_t j; 270 flags = tt->flags; 271 /* 272 * Work out tag and class to use: tagging may come either from the 273 * template or the arguments, not both because this would create 274 * ambiguity. Additionally the iclass argument may contain some 275 * additional flags which should be noted and passed down to other 276 * levels. 277 */ 278 if (flags & ASN1_TFLG_TAG_MASK) { 279 /* Error if argument and template tagging */ 280 if (tag != -1) 281 /* FIXME: error code here */ 282 return -1; 283 /* Get tagging from template */ 284 ttag = tt->tag; 285 tclass = flags & ASN1_TFLG_TAG_CLASS; 286 } else if (tag != -1) { 287 /* No template tagging, get from arguments */ 288 ttag = tag; 289 tclass = iclass & ASN1_TFLG_TAG_CLASS; 290 } else { 291 ttag = -1; 292 tclass = 0; 293 } 294 /* 295 * Remove any class mask from iflag. 296 */ 297 iclass &= ~ASN1_TFLG_TAG_CLASS; 298 299 /* 300 * At this point 'ttag' contains the outer tag to use, 'tclass' is the 301 * class and iclass is any flags passed to this function. 302 */ 303 304 /* if template and arguments require ndef, use it */ 305 if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF)) 306 ndef = 2; 307 else 308 ndef = 1; 309 310 if (flags & ASN1_TFLG_SK_MASK) { 311 /* SET OF, SEQUENCE OF */ 312 STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval; 313 int isset, sktag, skaclass; 314 int skcontlen, sklen; 315 ASN1_VALUE *skitem; 316 317 if (!*pval) 318 return 0; 319 320 if (flags & ASN1_TFLG_SET_OF) { 321 isset = 1; 322 /* 2 means we reorder */ 323 if (flags & ASN1_TFLG_SEQUENCE_OF) 324 isset = 2; 325 } else 326 isset = 0; 327 328 /* 329 * Work out inner tag value: if EXPLICIT or no tagging use underlying 330 * type. 331 */ 332 if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG)) { 333 sktag = ttag; 334 skaclass = tclass; 335 } else { 336 skaclass = V_ASN1_UNIVERSAL; 337 if (isset) 338 sktag = V_ASN1_SET; 339 else 340 sktag = V_ASN1_SEQUENCE; 341 } 342 343 /* Determine total length of items */ 344 skcontlen = 0; 345 for (j = 0; j < sk_ASN1_VALUE_num(sk); j++) { 346 int tmplen; 347 skitem = sk_ASN1_VALUE_value(sk, j); 348 tmplen = ASN1_item_ex_i2d(&skitem, NULL, ASN1_ITEM_ptr(tt->item), 349 -1, iclass); 350 if (tmplen == -1 || (skcontlen > INT_MAX - tmplen)) 351 return -1; 352 skcontlen += tmplen; 353 } 354 sklen = ASN1_object_size(ndef, skcontlen, sktag); 355 if (sklen == -1) 356 return -1; 357 /* If EXPLICIT need length of surrounding tag */ 358 if (flags & ASN1_TFLG_EXPTAG) 359 ret = ASN1_object_size(ndef, sklen, ttag); 360 else 361 ret = sklen; 362 363 if (!out || ret == -1) 364 return ret; 365 366 /* Now encode this lot... */ 367 /* EXPLICIT tag */ 368 if (flags & ASN1_TFLG_EXPTAG) 369 ASN1_put_object(out, ndef, sklen, ttag, tclass); 370 /* SET or SEQUENCE and IMPLICIT tag */ 371 ASN1_put_object(out, ndef, skcontlen, sktag, skaclass); 372 /* And the stuff itself */ 373 asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item), 374 isset, iclass); 375 if (ndef == 2) { 376 ASN1_put_eoc(out); 377 if (flags & ASN1_TFLG_EXPTAG) 378 ASN1_put_eoc(out); 379 } 380 381 return ret; 382 } 383 384 if (flags & ASN1_TFLG_EXPTAG) { 385 /* EXPLICIT tagging */ 386 /* Find length of tagged item */ 387 i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item), -1, iclass); 388 if (!i) 389 return 0; 390 /* Find length of EXPLICIT tag */ 391 ret = ASN1_object_size(ndef, i, ttag); 392 if (out && ret != -1) { 393 /* Output tag and item */ 394 ASN1_put_object(out, ndef, i, ttag, tclass); 395 ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, iclass); 396 if (ndef == 2) 397 ASN1_put_eoc(out); 398 } 399 return ret; 400 } 401 402 /* Either normal or IMPLICIT tagging: combine class and flags */ 403 return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), 404 ttag, tclass | iclass); 405 406 } 407 408 /* Temporary structure used to hold DER encoding of items for SET OF */ 409 410 typedef struct { 411 unsigned char *data; 412 int length; 413 ASN1_VALUE *field; 414 } DER_ENC; 415 416 static int der_cmp(const void *a, const void *b) 417 { 418 const DER_ENC *d1 = a, *d2 = b; 419 int cmplen, i; 420 cmplen = (d1->length < d2->length) ? d1->length : d2->length; 421 i = OPENSSL_memcmp(d1->data, d2->data, cmplen); 422 if (i) 423 return i; 424 return d1->length - d2->length; 425 } 426 427 /* Output the content octets of SET OF or SEQUENCE OF */ 428 429 static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out, 430 int skcontlen, const ASN1_ITEM *item, 431 int do_sort, int iclass) 432 { 433 size_t i; 434 ASN1_VALUE *skitem; 435 unsigned char *tmpdat = NULL, *p = NULL; 436 DER_ENC *derlst = NULL, *tder; 437 if (do_sort) { 438 /* Don't need to sort less than 2 items */ 439 if (sk_ASN1_VALUE_num(sk) < 2) 440 do_sort = 0; 441 else { 442 derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk) 443 * sizeof(*derlst)); 444 if (!derlst) 445 return 0; 446 tmpdat = OPENSSL_malloc(skcontlen); 447 if (!tmpdat) { 448 OPENSSL_free(derlst); 449 return 0; 450 } 451 } 452 } 453 /* If not sorting just output each item */ 454 if (!do_sort) { 455 for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) { 456 skitem = sk_ASN1_VALUE_value(sk, i); 457 ASN1_item_ex_i2d(&skitem, out, item, -1, iclass); 458 } 459 return 1; 460 } 461 p = tmpdat; 462 463 /* Doing sort: build up a list of each member's DER encoding */ 464 for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) { 465 skitem = sk_ASN1_VALUE_value(sk, i); 466 tder->data = p; 467 tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass); 468 tder->field = skitem; 469 } 470 471 /* Now sort them */ 472 qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp); 473 /* Output sorted DER encoding */ 474 p = *out; 475 for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) { 476 OPENSSL_memcpy(p, tder->data, tder->length); 477 p += tder->length; 478 } 479 *out = p; 480 /* If do_sort is 2 then reorder the STACK */ 481 if (do_sort == 2) { 482 for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) 483 (void)sk_ASN1_VALUE_set(sk, i, tder->field); 484 } 485 OPENSSL_free(derlst); 486 OPENSSL_free(tmpdat); 487 return 1; 488 } 489 490 static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out, 491 const ASN1_ITEM *it, int tag, int aclass) 492 { 493 int len; 494 int utype; 495 int usetag; 496 int ndef = 0; 497 498 utype = it->utype; 499 500 /* 501 * Get length of content octets and maybe find out the underlying type. 502 */ 503 504 len = asn1_ex_i2c(pval, NULL, &utype, it); 505 506 /* 507 * If SEQUENCE, SET or OTHER then header is included in pseudo content 508 * octets so don't include tag+length. We need to check here because the 509 * call to asn1_ex_i2c() could change utype. 510 */ 511 if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) || 512 (utype == V_ASN1_OTHER)) 513 usetag = 0; 514 else 515 usetag = 1; 516 517 /* -1 means omit type */ 518 519 if (len == -1) 520 return 0; 521 522 /* -2 return is special meaning use ndef */ 523 if (len == -2) { 524 ndef = 2; 525 len = 0; 526 } 527 528 /* If not implicitly tagged get tag from underlying type */ 529 if (tag == -1) 530 tag = utype; 531 532 /* Output tag+length followed by content octets */ 533 if (out) { 534 if (usetag) 535 ASN1_put_object(out, ndef, len, tag, aclass); 536 asn1_ex_i2c(pval, *out, &utype, it); 537 if (ndef) 538 ASN1_put_eoc(out); 539 else 540 *out += len; 541 } 542 543 if (usetag) 544 return ASN1_object_size(ndef, len, tag); 545 return len; 546 } 547 548 /* Produce content octets from a structure */ 549 550 int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype, 551 const ASN1_ITEM *it) 552 { 553 ASN1_BOOLEAN *tbool = NULL; 554 ASN1_STRING *strtmp; 555 ASN1_OBJECT *otmp; 556 int utype; 557 const unsigned char *cont; 558 unsigned char c; 559 int len; 560 const ASN1_PRIMITIVE_FUNCS *pf; 561 pf = it->funcs; 562 if (pf && pf->prim_i2c) 563 return pf->prim_i2c(pval, cout, putype, it); 564 565 /* Should type be omitted? */ 566 if ((it->itype != ASN1_ITYPE_PRIMITIVE) 567 || (it->utype != V_ASN1_BOOLEAN)) { 568 if (!*pval) 569 return -1; 570 } 571 572 if (it->itype == ASN1_ITYPE_MSTRING) { 573 /* If MSTRING type set the underlying type */ 574 strtmp = (ASN1_STRING *)*pval; 575 utype = strtmp->type; 576 *putype = utype; 577 } else if (it->utype == V_ASN1_ANY) { 578 /* If ANY set type and pointer to value */ 579 ASN1_TYPE *typ; 580 typ = (ASN1_TYPE *)*pval; 581 utype = typ->type; 582 *putype = utype; 583 pval = &typ->value.asn1_value; 584 } else 585 utype = *putype; 586 587 switch (utype) { 588 case V_ASN1_OBJECT: 589 otmp = (ASN1_OBJECT *)*pval; 590 cont = otmp->data; 591 len = otmp->length; 592 break; 593 594 case V_ASN1_NULL: 595 cont = NULL; 596 len = 0; 597 break; 598 599 case V_ASN1_BOOLEAN: 600 tbool = (ASN1_BOOLEAN *)pval; 601 if (*tbool == -1) 602 return -1; 603 if (it->utype != V_ASN1_ANY) { 604 /* 605 * Default handling if value == size field then omit 606 */ 607 if (*tbool && (it->size > 0)) 608 return -1; 609 if (!*tbool && !it->size) 610 return -1; 611 } 612 c = (unsigned char)*tbool; 613 cont = &c; 614 len = 1; 615 break; 616 617 case V_ASN1_BIT_STRING: 618 return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval, 619 cout ? &cout : NULL); 620 break; 621 622 case V_ASN1_INTEGER: 623 case V_ASN1_ENUMERATED: 624 /* 625 * These are all have the same content format as ASN1_INTEGER 626 */ 627 return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL); 628 break; 629 630 case V_ASN1_OCTET_STRING: 631 case V_ASN1_NUMERICSTRING: 632 case V_ASN1_PRINTABLESTRING: 633 case V_ASN1_T61STRING: 634 case V_ASN1_VIDEOTEXSTRING: 635 case V_ASN1_IA5STRING: 636 case V_ASN1_UTCTIME: 637 case V_ASN1_GENERALIZEDTIME: 638 case V_ASN1_GRAPHICSTRING: 639 case V_ASN1_VISIBLESTRING: 640 case V_ASN1_GENERALSTRING: 641 case V_ASN1_UNIVERSALSTRING: 642 case V_ASN1_BMPSTRING: 643 case V_ASN1_UTF8STRING: 644 case V_ASN1_SEQUENCE: 645 case V_ASN1_SET: 646 default: 647 /* All based on ASN1_STRING and handled the same */ 648 strtmp = (ASN1_STRING *)*pval; 649 /* Special handling for NDEF */ 650 if ((it->size == ASN1_TFLG_NDEF) 651 && (strtmp->flags & ASN1_STRING_FLAG_NDEF)) { 652 if (cout) { 653 strtmp->data = cout; 654 strtmp->length = 0; 655 } 656 /* Special return code */ 657 return -2; 658 } 659 cont = strtmp->data; 660 len = strtmp->length; 661 662 break; 663 664 } 665 if (cout && len) 666 OPENSSL_memcpy(cout, cont, len); 667 return len; 668 } 669
