1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@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@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@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@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
ASN1_item_ndef_i2d(ASN1_VALUE * val,unsigned char ** out,const ASN1_ITEM * it)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
ASN1_item_i2d(ASN1_VALUE * val,unsigned char ** out,const ASN1_ITEM * it)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
asn1_item_flags_i2d(ASN1_VALUE * val,unsigned char ** out,const ASN1_ITEM * it,int flags)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
ASN1_item_ex_i2d(ASN1_VALUE ** pval,unsigned char ** out,const ASN1_ITEM * it,int tag,int aclass)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
ASN1_template_i2d(ASN1_VALUE ** pval,unsigned char ** out,const ASN1_TEMPLATE * tt)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
asn1_template_ex_i2d(ASN1_VALUE ** pval,unsigned char ** out,const ASN1_TEMPLATE * tt,int tag,int iclass)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
der_cmp(const void * a,const void * b)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
asn1_set_seq_out(STACK_OF (ASN1_VALUE)* sk,unsigned char ** out,int skcontlen,const ASN1_ITEM * item,int do_sort,int iclass)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
asn1_i2d_ex_primitive(ASN1_VALUE ** pval,unsigned char ** out,const ASN1_ITEM * it,int tag,int aclass)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
asn1_ex_i2c(ASN1_VALUE ** pval,unsigned char * cout,int * putype,const ASN1_ITEM * it)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