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 static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out, 260 const ASN1_TEMPLATE *tt, int tag, int iclass) 261 { 262 int i, ret, flags, ttag, tclass, ndef; 263 size_t j; 264 flags = tt->flags; 265 /* 266 * Work out tag and class to use: tagging may come either from the 267 * template or the arguments, not both because this would create 268 * ambiguity. Additionally the iclass argument may contain some 269 * additional flags which should be noted and passed down to other 270 * levels. 271 */ 272 if (flags & ASN1_TFLG_TAG_MASK) { 273 /* Error if argument and template tagging */ 274 if (tag != -1) 275 /* FIXME: error code here */ 276 return -1; 277 /* Get tagging from template */ 278 ttag = tt->tag; 279 tclass = flags & ASN1_TFLG_TAG_CLASS; 280 } else if (tag != -1) { 281 /* No template tagging, get from arguments */ 282 ttag = tag; 283 tclass = iclass & ASN1_TFLG_TAG_CLASS; 284 } else { 285 ttag = -1; 286 tclass = 0; 287 } 288 /* 289 * Remove any class mask from iflag. 290 */ 291 iclass &= ~ASN1_TFLG_TAG_CLASS; 292 293 /* 294 * At this point 'ttag' contains the outer tag to use, 'tclass' is the 295 * class and iclass is any flags passed to this function. 296 */ 297 298 /* if template and arguments require ndef, use it */ 299 if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF)) 300 ndef = 2; 301 else 302 ndef = 1; 303 304 if (flags & ASN1_TFLG_SK_MASK) { 305 /* SET OF, SEQUENCE OF */ 306 STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval; 307 int isset, sktag, skaclass; 308 int skcontlen, sklen; 309 ASN1_VALUE *skitem; 310 311 if (!*pval) 312 return 0; 313 314 if (flags & ASN1_TFLG_SET_OF) { 315 isset = 1; 316 /* 2 means we reorder */ 317 if (flags & ASN1_TFLG_SEQUENCE_OF) 318 isset = 2; 319 } else 320 isset = 0; 321 322 /* 323 * Work out inner tag value: if EXPLICIT or no tagging use underlying 324 * type. 325 */ 326 if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG)) { 327 sktag = ttag; 328 skaclass = tclass; 329 } else { 330 skaclass = V_ASN1_UNIVERSAL; 331 if (isset) 332 sktag = V_ASN1_SET; 333 else 334 sktag = V_ASN1_SEQUENCE; 335 } 336 337 /* Determine total length of items */ 338 skcontlen = 0; 339 for (j = 0; j < sk_ASN1_VALUE_num(sk); j++) { 340 int tmplen; 341 skitem = sk_ASN1_VALUE_value(sk, j); 342 tmplen = ASN1_item_ex_i2d(&skitem, NULL, ASN1_ITEM_ptr(tt->item), 343 -1, iclass); 344 if (tmplen == -1 || (skcontlen > INT_MAX - tmplen)) 345 return -1; 346 skcontlen += tmplen; 347 } 348 sklen = ASN1_object_size(ndef, skcontlen, sktag); 349 if (sklen == -1) 350 return -1; 351 /* If EXPLICIT need length of surrounding tag */ 352 if (flags & ASN1_TFLG_EXPTAG) 353 ret = ASN1_object_size(ndef, sklen, ttag); 354 else 355 ret = sklen; 356 357 if (!out || ret == -1) 358 return ret; 359 360 /* Now encode this lot... */ 361 /* EXPLICIT tag */ 362 if (flags & ASN1_TFLG_EXPTAG) 363 ASN1_put_object(out, ndef, sklen, ttag, tclass); 364 /* SET or SEQUENCE and IMPLICIT tag */ 365 ASN1_put_object(out, ndef, skcontlen, sktag, skaclass); 366 /* And the stuff itself */ 367 asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item), 368 isset, iclass); 369 if (ndef == 2) { 370 ASN1_put_eoc(out); 371 if (flags & ASN1_TFLG_EXPTAG) 372 ASN1_put_eoc(out); 373 } 374 375 return ret; 376 } 377 378 if (flags & ASN1_TFLG_EXPTAG) { 379 /* EXPLICIT tagging */ 380 /* Find length of tagged item */ 381 i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item), -1, iclass); 382 if (!i) 383 return 0; 384 /* Find length of EXPLICIT tag */ 385 ret = ASN1_object_size(ndef, i, ttag); 386 if (out && ret != -1) { 387 /* Output tag and item */ 388 ASN1_put_object(out, ndef, i, ttag, tclass); 389 ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, iclass); 390 if (ndef == 2) 391 ASN1_put_eoc(out); 392 } 393 return ret; 394 } 395 396 /* Either normal or IMPLICIT tagging: combine class and flags */ 397 return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), 398 ttag, tclass | iclass); 399 400 } 401 402 /* Temporary structure used to hold DER encoding of items for SET OF */ 403 404 typedef struct { 405 unsigned char *data; 406 int length; 407 ASN1_VALUE *field; 408 } DER_ENC; 409 410 static int der_cmp(const void *a, const void *b) 411 { 412 const DER_ENC *d1 = a, *d2 = b; 413 int cmplen, i; 414 cmplen = (d1->length < d2->length) ? d1->length : d2->length; 415 i = OPENSSL_memcmp(d1->data, d2->data, cmplen); 416 if (i) 417 return i; 418 return d1->length - d2->length; 419 } 420 421 /* Output the content octets of SET OF or SEQUENCE OF */ 422 423 static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out, 424 int skcontlen, const ASN1_ITEM *item, 425 int do_sort, int iclass) 426 { 427 size_t i; 428 ASN1_VALUE *skitem; 429 unsigned char *tmpdat = NULL, *p = NULL; 430 DER_ENC *derlst = NULL, *tder; 431 if (do_sort) { 432 /* Don't need to sort less than 2 items */ 433 if (sk_ASN1_VALUE_num(sk) < 2) 434 do_sort = 0; 435 else { 436 derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk) 437 * sizeof(*derlst)); 438 if (!derlst) 439 return 0; 440 tmpdat = OPENSSL_malloc(skcontlen); 441 if (!tmpdat) { 442 OPENSSL_free(derlst); 443 return 0; 444 } 445 } 446 } 447 /* If not sorting just output each item */ 448 if (!do_sort) { 449 for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) { 450 skitem = sk_ASN1_VALUE_value(sk, i); 451 ASN1_item_ex_i2d(&skitem, out, item, -1, iclass); 452 } 453 return 1; 454 } 455 p = tmpdat; 456 457 /* Doing sort: build up a list of each member's DER encoding */ 458 for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) { 459 skitem = sk_ASN1_VALUE_value(sk, i); 460 tder->data = p; 461 tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass); 462 tder->field = skitem; 463 } 464 465 /* Now sort them */ 466 qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp); 467 /* Output sorted DER encoding */ 468 p = *out; 469 for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) { 470 OPENSSL_memcpy(p, tder->data, tder->length); 471 p += tder->length; 472 } 473 *out = p; 474 /* If do_sort is 2 then reorder the STACK */ 475 if (do_sort == 2) { 476 for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) 477 (void)sk_ASN1_VALUE_set(sk, i, tder->field); 478 } 479 OPENSSL_free(derlst); 480 OPENSSL_free(tmpdat); 481 return 1; 482 } 483 484 static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out, 485 const ASN1_ITEM *it, int tag, int aclass) 486 { 487 int len; 488 int utype; 489 int usetag; 490 int ndef = 0; 491 492 utype = it->utype; 493 494 /* 495 * Get length of content octets and maybe find out the underlying type. 496 */ 497 498 len = asn1_ex_i2c(pval, NULL, &utype, it); 499 500 /* 501 * If SEQUENCE, SET or OTHER then header is included in pseudo content 502 * octets so don't include tag+length. We need to check here because the 503 * call to asn1_ex_i2c() could change utype. 504 */ 505 if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) || 506 (utype == V_ASN1_OTHER)) 507 usetag = 0; 508 else 509 usetag = 1; 510 511 /* -1 means omit type */ 512 513 if (len == -1) 514 return 0; 515 516 /* -2 return is special meaning use ndef */ 517 if (len == -2) { 518 ndef = 2; 519 len = 0; 520 } 521 522 /* If not implicitly tagged get tag from underlying type */ 523 if (tag == -1) 524 tag = utype; 525 526 /* Output tag+length followed by content octets */ 527 if (out) { 528 if (usetag) 529 ASN1_put_object(out, ndef, len, tag, aclass); 530 asn1_ex_i2c(pval, *out, &utype, it); 531 if (ndef) 532 ASN1_put_eoc(out); 533 else 534 *out += len; 535 } 536 537 if (usetag) 538 return ASN1_object_size(ndef, len, tag); 539 return len; 540 } 541 542 /* Produce content octets from a structure */ 543 544 int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype, 545 const ASN1_ITEM *it) 546 { 547 ASN1_BOOLEAN *tbool = NULL; 548 ASN1_STRING *strtmp; 549 ASN1_OBJECT *otmp; 550 int utype; 551 const unsigned char *cont; 552 unsigned char c; 553 int len; 554 const ASN1_PRIMITIVE_FUNCS *pf; 555 pf = it->funcs; 556 if (pf && pf->prim_i2c) 557 return pf->prim_i2c(pval, cout, putype, it); 558 559 /* Should type be omitted? */ 560 if ((it->itype != ASN1_ITYPE_PRIMITIVE) 561 || (it->utype != V_ASN1_BOOLEAN)) { 562 if (!*pval) 563 return -1; 564 } 565 566 if (it->itype == ASN1_ITYPE_MSTRING) { 567 /* If MSTRING type set the underlying type */ 568 strtmp = (ASN1_STRING *)*pval; 569 utype = strtmp->type; 570 *putype = utype; 571 } else if (it->utype == V_ASN1_ANY) { 572 /* If ANY set type and pointer to value */ 573 ASN1_TYPE *typ; 574 typ = (ASN1_TYPE *)*pval; 575 utype = typ->type; 576 *putype = utype; 577 pval = &typ->value.asn1_value; 578 } else 579 utype = *putype; 580 581 switch (utype) { 582 case V_ASN1_OBJECT: 583 otmp = (ASN1_OBJECT *)*pval; 584 cont = otmp->data; 585 len = otmp->length; 586 break; 587 588 case V_ASN1_NULL: 589 cont = NULL; 590 len = 0; 591 break; 592 593 case V_ASN1_BOOLEAN: 594 tbool = (ASN1_BOOLEAN *)pval; 595 if (*tbool == -1) 596 return -1; 597 if (it->utype != V_ASN1_ANY) { 598 /* 599 * Default handling if value == size field then omit 600 */ 601 if (*tbool && (it->size > 0)) 602 return -1; 603 if (!*tbool && !it->size) 604 return -1; 605 } 606 c = (unsigned char)*tbool; 607 cont = &c; 608 len = 1; 609 break; 610 611 case V_ASN1_BIT_STRING: 612 return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval, 613 cout ? &cout : NULL); 614 break; 615 616 case V_ASN1_INTEGER: 617 case V_ASN1_ENUMERATED: 618 /* 619 * These are all have the same content format as ASN1_INTEGER 620 */ 621 return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL); 622 break; 623 624 case V_ASN1_OCTET_STRING: 625 case V_ASN1_NUMERICSTRING: 626 case V_ASN1_PRINTABLESTRING: 627 case V_ASN1_T61STRING: 628 case V_ASN1_VIDEOTEXSTRING: 629 case V_ASN1_IA5STRING: 630 case V_ASN1_UTCTIME: 631 case V_ASN1_GENERALIZEDTIME: 632 case V_ASN1_GRAPHICSTRING: 633 case V_ASN1_VISIBLESTRING: 634 case V_ASN1_GENERALSTRING: 635 case V_ASN1_UNIVERSALSTRING: 636 case V_ASN1_BMPSTRING: 637 case V_ASN1_UTF8STRING: 638 case V_ASN1_SEQUENCE: 639 case V_ASN1_SET: 640 default: 641 /* All based on ASN1_STRING and handled the same */ 642 strtmp = (ASN1_STRING *)*pval; 643 /* Special handling for NDEF */ 644 if ((it->size == ASN1_TFLG_NDEF) 645 && (strtmp->flags & ASN1_STRING_FLAG_NDEF)) { 646 if (cout) { 647 strtmp->data = cout; 648 strtmp->length = 0; 649 } 650 /* Special return code */ 651 return -2; 652 } 653 cont = strtmp->data; 654 len = strtmp->length; 655 656 break; 657 658 } 659 if (cout && len) 660 OPENSSL_memcpy(cout, cont, len); 661 return len; 662 } 663
