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 <string.h>
60
61 #include <openssl/asn1t.h>
62 #include <openssl/mem.h>
63
64
65 static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
66 const ASN1_ITEM *it,
67 int tag, int aclass);
68 static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
69 int skcontlen, const ASN1_ITEM *item,
70 int do_sort, int iclass);
71 static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
72 const ASN1_TEMPLATE *tt,
73 int tag, int aclass);
74 static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
75 const ASN1_ITEM *it, int flags);
76
77 /* Top level i2d equivalents: the 'ndef' variant instructs the encoder
78 * to use indefinite length constructed encoding, where appropriate
79 */
80
ASN1_item_ndef_i2d(ASN1_VALUE * val,unsigned char ** out,const ASN1_ITEM * it)81 int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out,
82 const ASN1_ITEM *it)
83 {
84 return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF);
85 }
86
ASN1_item_i2d(ASN1_VALUE * val,unsigned char ** out,const ASN1_ITEM * it)87 int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
88 {
89 return asn1_item_flags_i2d(val, out, it, 0);
90 }
91
92 /* Encode an ASN1 item, this is use by the
93 * standard 'i2d' function. 'out' points to
94 * a buffer to output the data to.
95 *
96 * The new i2d has one additional feature. If the output
97 * 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 {
106 unsigned char *p, *buf;
107 int len;
108 len = ASN1_item_ex_i2d(&val, NULL, it, -1, flags);
109 if (len <= 0)
110 return len;
111 buf = OPENSSL_malloc(len);
112 if (!buf)
113 return -1;
114 p = buf;
115 ASN1_item_ex_i2d(&val, &p, it, -1, flags);
116 *out = buf;
117 return len;
118 }
119
120 return ASN1_item_ex_i2d(&val, out, it, -1, flags);
121 }
122
123 /* Encode an item, taking care of IMPLICIT tagging (if any).
124 * This function performs the normal item handling: it can be
125 * used in external types.
126 */
127
ASN1_item_ex_i2d(ASN1_VALUE ** pval,unsigned char ** out,const ASN1_ITEM * it,int tag,int aclass)128 int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
129 const ASN1_ITEM *it, int tag, int aclass)
130 {
131 const ASN1_TEMPLATE *tt = NULL;
132 unsigned char *p = NULL;
133 int i, seqcontlen, seqlen, ndef = 1;
134 const ASN1_COMPAT_FUNCS *cf;
135 const ASN1_EXTERN_FUNCS *ef;
136 const ASN1_AUX *aux = it->funcs;
137 ASN1_aux_cb *asn1_cb = 0;
138
139 if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
140 return 0;
141
142 if (aux && aux->asn1_cb)
143 asn1_cb = aux->asn1_cb;
144
145 switch(it->itype)
146 {
147
148 case ASN1_ITYPE_PRIMITIVE:
149 if (it->templates)
150 return asn1_template_ex_i2d(pval, out, it->templates,
151 tag, aclass);
152 return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
153 break;
154
155 case ASN1_ITYPE_MSTRING:
156 return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
157
158 case ASN1_ITYPE_CHOICE:
159 if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
160 return 0;
161 i = asn1_get_choice_selector(pval, it);
162 if ((i >= 0) && (i < it->tcount))
163 {
164 ASN1_VALUE **pchval;
165 const ASN1_TEMPLATE *chtt;
166 chtt = it->templates + i;
167 pchval = asn1_get_field_ptr(pval, chtt);
168 return asn1_template_ex_i2d(pchval, out, chtt,
169 -1, aclass);
170 }
171 /* Fixme: error condition if selector out of range */
172 if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
173 return 0;
174 break;
175
176 case ASN1_ITYPE_EXTERN:
177 /* If new style i2d it does all the work */
178 ef = it->funcs;
179 return ef->asn1_ex_i2d(pval, out, it, tag, aclass);
180
181 case ASN1_ITYPE_COMPAT:
182 /* old style hackery... */
183 cf = it->funcs;
184 if (out)
185 p = *out;
186 i = cf->asn1_i2d(*pval, out);
187 /* Fixup for IMPLICIT tag: note this messes up for tags > 30,
188 * but so did the old code. Tags > 30 are very rare anyway.
189 */
190 if (out && (tag != -1))
191 *p = aclass | tag | (*p & V_ASN1_CONSTRUCTED);
192 return i;
193
194 case ASN1_ITYPE_NDEF_SEQUENCE:
195 /* Use indefinite length constructed if requested */
196 if (aclass & ASN1_TFLG_NDEF) ndef = 2;
197 /* fall through */
198
199 case ASN1_ITYPE_SEQUENCE:
200 i = asn1_enc_restore(&seqcontlen, out, pval, it);
201 /* An error occurred */
202 if (i < 0)
203 return 0;
204 /* We have a valid cached encoding... */
205 if (i > 0)
206 return seqcontlen;
207 /* Otherwise carry on */
208 seqcontlen = 0;
209 /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
210 if (tag == -1)
211 {
212 tag = V_ASN1_SEQUENCE;
213 /* Retain any other flags in aclass */
214 aclass = (aclass & ~ASN1_TFLG_TAG_CLASS)
215 | V_ASN1_UNIVERSAL;
216 }
217 if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
218 return 0;
219 /* First work out sequence content length */
220 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++)
221 {
222 const ASN1_TEMPLATE *seqtt;
223 ASN1_VALUE **pseqval;
224 seqtt = asn1_do_adb(pval, tt, 1);
225 if (!seqtt)
226 return 0;
227 pseqval = asn1_get_field_ptr(pval, seqtt);
228 /* FIXME: check for errors in enhanced version */
229 seqcontlen += asn1_template_ex_i2d(pseqval, NULL, seqtt,
230 -1, aclass);
231 }
232
233 seqlen = ASN1_object_size(ndef, seqcontlen, tag);
234 if (!out)
235 return seqlen;
236 /* Output SEQUENCE header */
237 ASN1_put_object(out, ndef, seqcontlen, tag, aclass);
238 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++)
239 {
240 const ASN1_TEMPLATE *seqtt;
241 ASN1_VALUE **pseqval;
242 seqtt = asn1_do_adb(pval, tt, 1);
243 if (!seqtt)
244 return 0;
245 pseqval = asn1_get_field_ptr(pval, seqtt);
246 /* FIXME: check for errors in enhanced version */
247 asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass);
248 }
249 if (ndef == 2)
250 ASN1_put_eoc(out);
251 if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
252 return 0;
253 return seqlen;
254
255 default:
256 return 0;
257
258 }
259 return 0;
260 }
261
ASN1_template_i2d(ASN1_VALUE ** pval,unsigned char ** out,const ASN1_TEMPLATE * tt)262 int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out,
263 const ASN1_TEMPLATE *tt)
264 {
265 return asn1_template_ex_i2d(pval, out, tt, -1, 0);
266 }
267
asn1_template_ex_i2d(ASN1_VALUE ** pval,unsigned char ** out,const ASN1_TEMPLATE * tt,int tag,int iclass)268 static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
269 const ASN1_TEMPLATE *tt, int tag, int iclass)
270 {
271 int i, ret, flags, ttag, tclass, ndef;
272 size_t j;
273 flags = tt->flags;
274 /* Work out tag and class to use: tagging may come
275 * either from the template or the arguments, not both
276 * because this would create ambiguity. Additionally
277 * the iclass argument may contain some additional flags
278 * which should be noted and passed down to other levels.
279 */
280 if (flags & ASN1_TFLG_TAG_MASK)
281 {
282 /* Error if argument and template tagging */
283 if (tag != -1)
284 /* FIXME: error code here */
285 return -1;
286 /* Get tagging from template */
287 ttag = tt->tag;
288 tclass = flags & ASN1_TFLG_TAG_CLASS;
289 }
290 else if (tag != -1)
291 {
292 /* No template tagging, get from arguments */
293 ttag = tag;
294 tclass = iclass & ASN1_TFLG_TAG_CLASS;
295 }
296 else
297 {
298 ttag = -1;
299 tclass = 0;
300 }
301 /*
302 * Remove any class mask from iflag.
303 */
304 iclass &= ~ASN1_TFLG_TAG_CLASS;
305
306 /* At this point 'ttag' contains the outer tag to use,
307 * 'tclass' is the class and iclass is any flags passed
308 * to this function.
309 */
310
311 /* if template and arguments require ndef, use it */
312 if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF))
313 ndef = 2;
314 else ndef = 1;
315
316 if (flags & ASN1_TFLG_SK_MASK)
317 {
318 /* SET OF, SEQUENCE OF */
319 STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
320 int isset, sktag, skaclass;
321 int skcontlen, sklen;
322 ASN1_VALUE *skitem;
323
324 if (!*pval)
325 return 0;
326
327 if (flags & ASN1_TFLG_SET_OF)
328 {
329 isset = 1;
330 /* 2 means we reorder */
331 if (flags & ASN1_TFLG_SEQUENCE_OF)
332 isset = 2;
333 }
334 else isset = 0;
335
336 /* Work out inner tag value: if EXPLICIT
337 * or no tagging use underlying type.
338 */
339 if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG))
340 {
341 sktag = ttag;
342 skaclass = tclass;
343 }
344 else
345 {
346 skaclass = V_ASN1_UNIVERSAL;
347 if (isset)
348 sktag = V_ASN1_SET;
349 else sktag = V_ASN1_SEQUENCE;
350 }
351
352 /* Determine total length of items */
353 skcontlen = 0;
354 for (j = 0; j < sk_ASN1_VALUE_num(sk); j++)
355 {
356 skitem = sk_ASN1_VALUE_value(sk, j);
357 skcontlen += ASN1_item_ex_i2d(&skitem, NULL,
358 ASN1_ITEM_ptr(tt->item),
359 -1, iclass);
360 }
361 sklen = ASN1_object_size(ndef, skcontlen, sktag);
362 /* If EXPLICIT need length of surrounding tag */
363 if (flags & ASN1_TFLG_EXPTAG)
364 ret = ASN1_object_size(ndef, sklen, ttag);
365 else ret = sklen;
366
367 if (!out)
368 return ret;
369
370 /* Now encode this lot... */
371 /* EXPLICIT tag */
372 if (flags & ASN1_TFLG_EXPTAG)
373 ASN1_put_object(out, ndef, sklen, ttag, tclass);
374 /* SET or SEQUENCE and IMPLICIT tag */
375 ASN1_put_object(out, ndef, skcontlen, sktag, skaclass);
376 /* And the stuff itself */
377 asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item),
378 isset, iclass);
379 if (ndef == 2)
380 {
381 ASN1_put_eoc(out);
382 if (flags & ASN1_TFLG_EXPTAG)
383 ASN1_put_eoc(out);
384 }
385
386 return ret;
387 }
388
389 if (flags & ASN1_TFLG_EXPTAG)
390 {
391 /* EXPLICIT tagging */
392 /* Find length of tagged item */
393 i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item),
394 -1, iclass);
395 if (!i)
396 return 0;
397 /* Find length of EXPLICIT tag */
398 ret = ASN1_object_size(ndef, i, ttag);
399 if (out)
400 {
401 /* Output tag and item */
402 ASN1_put_object(out, ndef, i, ttag, tclass);
403 ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
404 -1, iclass);
405 if (ndef == 2)
406 ASN1_put_eoc(out);
407 }
408 return ret;
409 }
410
411 /* Either normal or IMPLICIT tagging: combine class and flags */
412 return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
413 ttag, tclass | iclass);
414
415 }
416
417 /* Temporary structure used to hold DER encoding of items for SET OF */
418
419 typedef struct {
420 unsigned char *data;
421 int length;
422 ASN1_VALUE *field;
423 } DER_ENC;
424
der_cmp(const void * a,const void * b)425 static int der_cmp(const void *a, const void *b)
426 {
427 const DER_ENC *d1 = a, *d2 = b;
428 int cmplen, i;
429 cmplen = (d1->length < d2->length) ? d1->length : d2->length;
430 i = memcmp(d1->data, d2->data, cmplen);
431 if (i)
432 return i;
433 return d1->length - d2->length;
434 }
435
436 /* Output the content octets of SET OF or SEQUENCE OF */
437
asn1_set_seq_out(STACK_OF (ASN1_VALUE)* sk,unsigned char ** out,int skcontlen,const ASN1_ITEM * item,int do_sort,int iclass)438 static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
439 int skcontlen, const ASN1_ITEM *item,
440 int do_sort, int iclass)
441 {
442 size_t i;
443 ASN1_VALUE *skitem;
444 unsigned char *tmpdat = NULL, *p = NULL;
445 DER_ENC *derlst = NULL, *tder;
446 if (do_sort)
447 {
448 /* Don't need to sort less than 2 items */
449 if (sk_ASN1_VALUE_num(sk) < 2)
450 do_sort = 0;
451 else
452 {
453 derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk)
454 * sizeof(*derlst));
455 if (!derlst)
456 return 0;
457 tmpdat = OPENSSL_malloc(skcontlen);
458 if (!tmpdat)
459 {
460 OPENSSL_free(derlst);
461 return 0;
462 }
463 }
464 }
465 /* If not sorting just output each item */
466 if (!do_sort)
467 {
468 for (i = 0; i < sk_ASN1_VALUE_num(sk); i++)
469 {
470 skitem = sk_ASN1_VALUE_value(sk, i);
471 ASN1_item_ex_i2d(&skitem, out, item, -1, iclass);
472 }
473 return 1;
474 }
475 p = tmpdat;
476
477 /* Doing sort: build up a list of each member's DER encoding */
478 for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
479 {
480 skitem = sk_ASN1_VALUE_value(sk, i);
481 tder->data = p;
482 tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass);
483 tder->field = skitem;
484 }
485
486 /* Now sort them */
487 qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp);
488 /* Output sorted DER encoding */
489 p = *out;
490 for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
491 {
492 memcpy(p, tder->data, tder->length);
493 p += tder->length;
494 }
495 *out = p;
496 /* If do_sort is 2 then reorder the STACK */
497 if (do_sort == 2)
498 {
499 for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk);
500 i++, tder++)
501 (void)sk_ASN1_VALUE_set(sk, i, tder->field);
502 }
503 OPENSSL_free(derlst);
504 OPENSSL_free(tmpdat);
505 return 1;
506 }
507
asn1_i2d_ex_primitive(ASN1_VALUE ** pval,unsigned char ** out,const ASN1_ITEM * it,int tag,int aclass)508 static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
509 const ASN1_ITEM *it, int tag, int aclass)
510 {
511 int len;
512 int utype;
513 int usetag;
514 int ndef = 0;
515
516 utype = it->utype;
517
518 /* Get length of content octets and maybe find
519 * out the underlying type.
520 */
521
522 len = asn1_ex_i2c(pval, NULL, &utype, it);
523
524 /* If SEQUENCE, SET or OTHER then header is
525 * included in pseudo content octets so don't
526 * include tag+length. We need to check here
527 * because the call to asn1_ex_i2c() could change
528 * utype.
529 */
530 if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) ||
531 (utype == V_ASN1_OTHER))
532 usetag = 0;
533 else usetag = 1;
534
535 /* -1 means omit type */
536
537 if (len == -1)
538 return 0;
539
540 /* -2 return is special meaning use ndef */
541 if (len == -2)
542 {
543 ndef = 2;
544 len = 0;
545 }
546
547 /* If not implicitly tagged get tag from underlying type */
548 if (tag == -1) tag = utype;
549
550 /* Output tag+length followed by content octets */
551 if (out)
552 {
553 if (usetag)
554 ASN1_put_object(out, ndef, len, tag, aclass);
555 asn1_ex_i2c(pval, *out, &utype, it);
556 if (ndef)
557 ASN1_put_eoc(out);
558 else
559 *out += len;
560 }
561
562 if (usetag)
563 return ASN1_object_size(ndef, len, tag);
564 return len;
565 }
566
567 /* Produce content octets from a structure */
568
asn1_ex_i2c(ASN1_VALUE ** pval,unsigned char * cout,int * putype,const ASN1_ITEM * it)569 int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
570 const ASN1_ITEM *it)
571 {
572 ASN1_BOOLEAN *tbool = NULL;
573 ASN1_STRING *strtmp;
574 ASN1_OBJECT *otmp;
575 int utype;
576 const unsigned char *cont;
577 unsigned char c;
578 int len;
579 const ASN1_PRIMITIVE_FUNCS *pf;
580 pf = it->funcs;
581 if (pf && pf->prim_i2c)
582 return pf->prim_i2c(pval, cout, putype, it);
583
584 /* Should type be omitted? */
585 if ((it->itype != ASN1_ITYPE_PRIMITIVE)
586 || (it->utype != V_ASN1_BOOLEAN))
587 {
588 if (!*pval) return -1;
589 }
590
591 if (it->itype == ASN1_ITYPE_MSTRING)
592 {
593 /* If MSTRING type set the underlying type */
594 strtmp = (ASN1_STRING *)*pval;
595 utype = strtmp->type;
596 *putype = utype;
597 }
598 else if (it->utype == V_ASN1_ANY)
599 {
600 /* If ANY set type and pointer to value */
601 ASN1_TYPE *typ;
602 typ = (ASN1_TYPE *)*pval;
603 utype = typ->type;
604 *putype = utype;
605 pval = &typ->value.asn1_value;
606 }
607 else utype = *putype;
608
609 switch(utype)
610 {
611 case V_ASN1_OBJECT:
612 otmp = (ASN1_OBJECT *)*pval;
613 cont = otmp->data;
614 len = otmp->length;
615 break;
616
617 case V_ASN1_NULL:
618 cont = NULL;
619 len = 0;
620 break;
621
622 case V_ASN1_BOOLEAN:
623 tbool = (ASN1_BOOLEAN *)pval;
624 if (*tbool == -1)
625 return -1;
626 if (it->utype != V_ASN1_ANY)
627 {
628 /* Default handling if value == size field then omit */
629 if (*tbool && (it->size > 0))
630 return -1;
631 if (!*tbool && !it->size)
632 return -1;
633 }
634 c = (unsigned char)*tbool;
635 cont = &c;
636 len = 1;
637 break;
638
639 case V_ASN1_BIT_STRING:
640 return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval,
641 cout ? &cout : NULL);
642 break;
643
644 case V_ASN1_INTEGER:
645 case V_ASN1_NEG_INTEGER:
646 case V_ASN1_ENUMERATED:
647 case V_ASN1_NEG_ENUMERATED:
648 /* These are all have the same content format
649 * as ASN1_INTEGER
650 */
651 return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval,
652 cout ? &cout : NULL);
653 break;
654
655 case V_ASN1_OCTET_STRING:
656 case V_ASN1_NUMERICSTRING:
657 case V_ASN1_PRINTABLESTRING:
658 case V_ASN1_T61STRING:
659 case V_ASN1_VIDEOTEXSTRING:
660 case V_ASN1_IA5STRING:
661 case V_ASN1_UTCTIME:
662 case V_ASN1_GENERALIZEDTIME:
663 case V_ASN1_GRAPHICSTRING:
664 case V_ASN1_VISIBLESTRING:
665 case V_ASN1_GENERALSTRING:
666 case V_ASN1_UNIVERSALSTRING:
667 case V_ASN1_BMPSTRING:
668 case V_ASN1_UTF8STRING:
669 case V_ASN1_SEQUENCE:
670 case V_ASN1_SET:
671 default:
672 /* All based on ASN1_STRING and handled the same */
673 strtmp = (ASN1_STRING *)*pval;
674 /* Special handling for NDEF */
675 if ((it->size == ASN1_TFLG_NDEF)
676 && (strtmp->flags & ASN1_STRING_FLAG_NDEF))
677 {
678 if (cout)
679 {
680 strtmp->data = cout;
681 strtmp->length = 0;
682 }
683 /* Special return code */
684 return -2;
685 }
686 cont = strtmp->data;
687 len = strtmp->length;
688
689 break;
690
691 }
692 if (cout && len)
693 memcpy(cout, cont, len);
694 return len;
695 }
696