1 | /* |
2 | * Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at |
7 | * https://www.openssl.org/source/license.html |
8 | */ |
9 | |
10 | #include <stddef.h> |
11 | #include <string.h> |
12 | #include "internal/cryptlib.h" |
13 | #include <openssl/asn1.h> |
14 | #include <openssl/asn1t.h> |
15 | #include <openssl/objects.h> |
16 | #include "crypto/asn1.h" |
17 | #include "asn1_local.h" |
18 | |
19 | static int asn1_i2d_ex_primitive(const ASN1_VALUE **pval, unsigned char **out, |
20 | const ASN1_ITEM *it, int tag, int aclass); |
21 | static int asn1_set_seq_out(STACK_OF(const_ASN1_VALUE) *sk, |
22 | unsigned char **out, |
23 | int skcontlen, const ASN1_ITEM *item, |
24 | int do_sort, int iclass); |
25 | static int asn1_template_ex_i2d(const ASN1_VALUE **pval, unsigned char **out, |
26 | const ASN1_TEMPLATE *tt, int tag, int aclass); |
27 | static int asn1_item_flags_i2d(const ASN1_VALUE *val, unsigned char **out, |
28 | const ASN1_ITEM *it, int flags); |
29 | static int asn1_ex_i2c(const ASN1_VALUE **pval, unsigned char *cout, int *putype, |
30 | const ASN1_ITEM *it); |
31 | |
32 | /* |
33 | * Top level i2d equivalents: the 'ndef' variant instructs the encoder to use |
34 | * indefinite length constructed encoding, where appropriate |
35 | */ |
36 | |
37 | int ASN1_item_ndef_i2d(const ASN1_VALUE *val, unsigned char **out, |
38 | const ASN1_ITEM *it) |
39 | { |
40 | return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF); |
41 | } |
42 | |
43 | int ASN1_item_i2d(const ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it) |
44 | { |
45 | return asn1_item_flags_i2d(val, out, it, 0); |
46 | } |
47 | |
48 | /* |
49 | * Encode an ASN1 item, this is use by the standard 'i2d' function. 'out' |
50 | * points to a buffer to output the data to. The new i2d has one additional |
51 | * feature. If the output buffer is NULL (i.e. *out == NULL) then a buffer is |
52 | * allocated and populated with the encoding. |
53 | */ |
54 | |
55 | static int asn1_item_flags_i2d(const ASN1_VALUE *val, unsigned char **out, |
56 | const ASN1_ITEM *it, int flags) |
57 | { |
58 | if (out != NULL && *out == NULL) { |
59 | unsigned char *p, *buf; |
60 | int len; |
61 | |
62 | len = ASN1_item_ex_i2d(&val, NULL, it, -1, flags); |
63 | if (len <= 0) |
64 | return len; |
65 | if ((buf = OPENSSL_malloc(len)) == NULL) { |
66 | ASN1err(ASN1_F_ASN1_ITEM_FLAGS_I2D, ERR_R_MALLOC_FAILURE); |
67 | return -1; |
68 | } |
69 | p = buf; |
70 | ASN1_item_ex_i2d(&val, &p, it, -1, flags); |
71 | *out = buf; |
72 | return len; |
73 | } |
74 | |
75 | return ASN1_item_ex_i2d(&val, out, it, -1, flags); |
76 | } |
77 | |
78 | /* |
79 | * Encode an item, taking care of IMPLICIT tagging (if any). This function |
80 | * performs the normal item handling: it can be used in external types. |
81 | */ |
82 | |
83 | int ASN1_item_ex_i2d(const ASN1_VALUE **pval, unsigned char **out, |
84 | const ASN1_ITEM *it, int tag, int aclass) |
85 | { |
86 | const ASN1_TEMPLATE *tt = NULL; |
87 | int i, seqcontlen, seqlen, ndef = 1; |
88 | const ASN1_EXTERN_FUNCS *ef; |
89 | const ASN1_AUX *aux = it->funcs; |
90 | ASN1_aux_const_cb *asn1_cb = NULL; |
91 | |
92 | if ((it->itype != ASN1_ITYPE_PRIMITIVE) && *pval == NULL) |
93 | return 0; |
94 | |
95 | if (aux != NULL) { |
96 | asn1_cb = ((aux->flags & ASN1_AFLG_CONST_CB) != 0) ? aux->asn1_const_cb |
97 | : (ASN1_aux_const_cb *)aux->asn1_cb; /* backward compatibility */ |
98 | } |
99 | |
100 | switch (it->itype) { |
101 | |
102 | case ASN1_ITYPE_PRIMITIVE: |
103 | if (it->templates) |
104 | return asn1_template_ex_i2d(pval, out, it->templates, |
105 | tag, aclass); |
106 | return asn1_i2d_ex_primitive(pval, out, it, tag, aclass); |
107 | |
108 | case ASN1_ITYPE_MSTRING: |
109 | return asn1_i2d_ex_primitive(pval, out, it, -1, aclass); |
110 | |
111 | case ASN1_ITYPE_CHOICE: |
112 | if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL)) |
113 | return 0; |
114 | i = asn1_get_choice_selector_const(pval, it); |
115 | if ((i >= 0) && (i < it->tcount)) { |
116 | const ASN1_VALUE **pchval; |
117 | const ASN1_TEMPLATE *chtt; |
118 | chtt = it->templates + i; |
119 | pchval = asn1_get_const_field_ptr(pval, chtt); |
120 | return asn1_template_ex_i2d(pchval, out, chtt, -1, aclass); |
121 | } |
122 | /* Fixme: error condition if selector out of range */ |
123 | if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL)) |
124 | return 0; |
125 | break; |
126 | |
127 | case ASN1_ITYPE_EXTERN: |
128 | /* If new style i2d it does all the work */ |
129 | ef = it->funcs; |
130 | return ef->asn1_ex_i2d(pval, out, it, tag, aclass); |
131 | |
132 | case ASN1_ITYPE_NDEF_SEQUENCE: |
133 | /* Use indefinite length constructed if requested */ |
134 | if (aclass & ASN1_TFLG_NDEF) |
135 | ndef = 2; |
136 | /* fall through */ |
137 | |
138 | case ASN1_ITYPE_SEQUENCE: |
139 | i = asn1_enc_restore(&seqcontlen, out, pval, it); |
140 | /* An error occurred */ |
141 | if (i < 0) |
142 | return 0; |
143 | /* We have a valid cached encoding... */ |
144 | if (i > 0) |
145 | return seqcontlen; |
146 | /* Otherwise carry on */ |
147 | seqcontlen = 0; |
148 | /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */ |
149 | if (tag == -1) { |
150 | tag = V_ASN1_SEQUENCE; |
151 | /* Retain any other flags in aclass */ |
152 | aclass = (aclass & ~ASN1_TFLG_TAG_CLASS) |
153 | | V_ASN1_UNIVERSAL; |
154 | } |
155 | if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL)) |
156 | return 0; |
157 | /* First work out sequence content length */ |
158 | for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) { |
159 | const ASN1_TEMPLATE *seqtt; |
160 | const ASN1_VALUE **pseqval; |
161 | int tmplen; |
162 | seqtt = asn1_do_adb(*pval, tt, 1); |
163 | if (!seqtt) |
164 | return 0; |
165 | pseqval = asn1_get_const_field_ptr(pval, seqtt); |
166 | tmplen = asn1_template_ex_i2d(pseqval, NULL, seqtt, -1, aclass); |
167 | if (tmplen == -1 || (tmplen > INT_MAX - seqcontlen)) |
168 | return -1; |
169 | seqcontlen += tmplen; |
170 | } |
171 | |
172 | seqlen = ASN1_object_size(ndef, seqcontlen, tag); |
173 | if (!out || seqlen == -1) |
174 | return seqlen; |
175 | /* Output SEQUENCE header */ |
176 | ASN1_put_object(out, ndef, seqcontlen, tag, aclass); |
177 | for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) { |
178 | const ASN1_TEMPLATE *seqtt; |
179 | const ASN1_VALUE **pseqval; |
180 | seqtt = asn1_do_adb(*pval, tt, 1); |
181 | if (!seqtt) |
182 | return 0; |
183 | pseqval = asn1_get_const_field_ptr(pval, seqtt); |
184 | /* FIXME: check for errors in enhanced version */ |
185 | asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass); |
186 | } |
187 | if (ndef == 2) |
188 | ASN1_put_eoc(out); |
189 | if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL)) |
190 | return 0; |
191 | return seqlen; |
192 | |
193 | default: |
194 | return 0; |
195 | |
196 | } |
197 | return 0; |
198 | } |
199 | |
200 | static int asn1_template_ex_i2d(const ASN1_VALUE **pval, unsigned char **out, |
201 | const ASN1_TEMPLATE *tt, int tag, int iclass) |
202 | { |
203 | int i, ret, flags, ttag, tclass, ndef; |
204 | const ASN1_VALUE *tval; |
205 | flags = tt->flags; |
206 | |
207 | /* |
208 | * If field is embedded then val needs fixing so it is a pointer to |
209 | * a pointer to a field. |
210 | */ |
211 | if (flags & ASN1_TFLG_EMBED) { |
212 | tval = (ASN1_VALUE *)pval; |
213 | pval = &tval; |
214 | } |
215 | /* |
216 | * Work out tag and class to use: tagging may come either from the |
217 | * template or the arguments, not both because this would create |
218 | * ambiguity. Additionally the iclass argument may contain some |
219 | * additional flags which should be noted and passed down to other |
220 | * levels. |
221 | */ |
222 | if (flags & ASN1_TFLG_TAG_MASK) { |
223 | /* Error if argument and template tagging */ |
224 | if (tag != -1) |
225 | /* FIXME: error code here */ |
226 | return -1; |
227 | /* Get tagging from template */ |
228 | ttag = tt->tag; |
229 | tclass = flags & ASN1_TFLG_TAG_CLASS; |
230 | } else if (tag != -1) { |
231 | /* No template tagging, get from arguments */ |
232 | ttag = tag; |
233 | tclass = iclass & ASN1_TFLG_TAG_CLASS; |
234 | } else { |
235 | ttag = -1; |
236 | tclass = 0; |
237 | } |
238 | /* |
239 | * Remove any class mask from iflag. |
240 | */ |
241 | iclass &= ~ASN1_TFLG_TAG_CLASS; |
242 | |
243 | /* |
244 | * At this point 'ttag' contains the outer tag to use, 'tclass' is the |
245 | * class and iclass is any flags passed to this function. |
246 | */ |
247 | |
248 | /* if template and arguments require ndef, use it */ |
249 | if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF)) |
250 | ndef = 2; |
251 | else |
252 | ndef = 1; |
253 | |
254 | if (flags & ASN1_TFLG_SK_MASK) { |
255 | /* SET OF, SEQUENCE OF */ |
256 | STACK_OF(const_ASN1_VALUE) *sk = (STACK_OF(const_ASN1_VALUE) *)*pval; |
257 | int isset, sktag, skaclass; |
258 | int skcontlen, sklen; |
259 | const ASN1_VALUE *skitem; |
260 | |
261 | if (*pval == NULL) |
262 | return 0; |
263 | |
264 | if (flags & ASN1_TFLG_SET_OF) { |
265 | isset = 1; |
266 | /* 2 means we reorder */ |
267 | if (flags & ASN1_TFLG_SEQUENCE_OF) |
268 | isset = 2; |
269 | } else |
270 | isset = 0; |
271 | |
272 | /* |
273 | * Work out inner tag value: if EXPLICIT or no tagging use underlying |
274 | * type. |
275 | */ |
276 | if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG)) { |
277 | sktag = ttag; |
278 | skaclass = tclass; |
279 | } else { |
280 | skaclass = V_ASN1_UNIVERSAL; |
281 | if (isset) |
282 | sktag = V_ASN1_SET; |
283 | else |
284 | sktag = V_ASN1_SEQUENCE; |
285 | } |
286 | |
287 | /* Determine total length of items */ |
288 | skcontlen = 0; |
289 | for (i = 0; i < sk_const_ASN1_VALUE_num(sk); i++) { |
290 | int tmplen; |
291 | skitem = sk_const_ASN1_VALUE_value(sk, i); |
292 | tmplen = ASN1_item_ex_i2d(&skitem, NULL, ASN1_ITEM_ptr(tt->item), |
293 | -1, iclass); |
294 | if (tmplen == -1 || (skcontlen > INT_MAX - tmplen)) |
295 | return -1; |
296 | skcontlen += tmplen; |
297 | } |
298 | sklen = ASN1_object_size(ndef, skcontlen, sktag); |
299 | if (sklen == -1) |
300 | return -1; |
301 | /* If EXPLICIT need length of surrounding tag */ |
302 | if (flags & ASN1_TFLG_EXPTAG) |
303 | ret = ASN1_object_size(ndef, sklen, ttag); |
304 | else |
305 | ret = sklen; |
306 | |
307 | if (!out || ret == -1) |
308 | return ret; |
309 | |
310 | /* Now encode this lot... */ |
311 | /* EXPLICIT tag */ |
312 | if (flags & ASN1_TFLG_EXPTAG) |
313 | ASN1_put_object(out, ndef, sklen, ttag, tclass); |
314 | /* SET or SEQUENCE and IMPLICIT tag */ |
315 | ASN1_put_object(out, ndef, skcontlen, sktag, skaclass); |
316 | /* And the stuff itself */ |
317 | asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item), |
318 | isset, iclass); |
319 | if (ndef == 2) { |
320 | ASN1_put_eoc(out); |
321 | if (flags & ASN1_TFLG_EXPTAG) |
322 | ASN1_put_eoc(out); |
323 | } |
324 | |
325 | return ret; |
326 | } |
327 | |
328 | if (flags & ASN1_TFLG_EXPTAG) { |
329 | /* EXPLICIT tagging */ |
330 | /* Find length of tagged item */ |
331 | i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item), -1, iclass); |
332 | if (!i) |
333 | return 0; |
334 | /* Find length of EXPLICIT tag */ |
335 | ret = ASN1_object_size(ndef, i, ttag); |
336 | if (out && ret != -1) { |
337 | /* Output tag and item */ |
338 | ASN1_put_object(out, ndef, i, ttag, tclass); |
339 | ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, iclass); |
340 | if (ndef == 2) |
341 | ASN1_put_eoc(out); |
342 | } |
343 | return ret; |
344 | } |
345 | |
346 | /* Either normal or IMPLICIT tagging: combine class and flags */ |
347 | return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), |
348 | ttag, tclass | iclass); |
349 | |
350 | } |
351 | |
352 | /* Temporary structure used to hold DER encoding of items for SET OF */ |
353 | |
354 | typedef struct { |
355 | unsigned char *data; |
356 | int length; |
357 | const ASN1_VALUE *field; |
358 | } DER_ENC; |
359 | |
360 | static int der_cmp(const void *a, const void *b) |
361 | { |
362 | const DER_ENC *d1 = a, *d2 = b; |
363 | int cmplen, i; |
364 | cmplen = (d1->length < d2->length) ? d1->length : d2->length; |
365 | i = memcmp(d1->data, d2->data, cmplen); |
366 | if (i) |
367 | return i; |
368 | return d1->length - d2->length; |
369 | } |
370 | |
371 | /* Output the content octets of SET OF or SEQUENCE OF */ |
372 | |
373 | static int asn1_set_seq_out(STACK_OF(const_ASN1_VALUE) *sk, |
374 | unsigned char **out, |
375 | int skcontlen, const ASN1_ITEM *item, |
376 | int do_sort, int iclass) |
377 | { |
378 | int i; |
379 | const ASN1_VALUE *skitem; |
380 | unsigned char *tmpdat = NULL, *p = NULL; |
381 | DER_ENC *derlst = NULL, *tder; |
382 | if (do_sort) { |
383 | /* Don't need to sort less than 2 items */ |
384 | if (sk_const_ASN1_VALUE_num(sk) < 2) |
385 | do_sort = 0; |
386 | else { |
387 | derlst = OPENSSL_malloc(sk_const_ASN1_VALUE_num(sk) |
388 | * sizeof(*derlst)); |
389 | if (derlst == NULL) |
390 | return 0; |
391 | tmpdat = OPENSSL_malloc(skcontlen); |
392 | if (tmpdat == NULL) { |
393 | OPENSSL_free(derlst); |
394 | return 0; |
395 | } |
396 | } |
397 | } |
398 | /* If not sorting just output each item */ |
399 | if (!do_sort) { |
400 | for (i = 0; i < sk_const_ASN1_VALUE_num(sk); i++) { |
401 | skitem = sk_const_ASN1_VALUE_value(sk, i); |
402 | ASN1_item_ex_i2d(&skitem, out, item, -1, iclass); |
403 | } |
404 | return 1; |
405 | } |
406 | p = tmpdat; |
407 | |
408 | /* Doing sort: build up a list of each member's DER encoding */ |
409 | for (i = 0, tder = derlst; i < sk_const_ASN1_VALUE_num(sk); i++, tder++) { |
410 | skitem = sk_const_ASN1_VALUE_value(sk, i); |
411 | tder->data = p; |
412 | tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass); |
413 | tder->field = skitem; |
414 | } |
415 | |
416 | /* Now sort them */ |
417 | qsort(derlst, sk_const_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp); |
418 | /* Output sorted DER encoding */ |
419 | p = *out; |
420 | for (i = 0, tder = derlst; i < sk_const_ASN1_VALUE_num(sk); i++, tder++) { |
421 | memcpy(p, tder->data, tder->length); |
422 | p += tder->length; |
423 | } |
424 | *out = p; |
425 | /* If do_sort is 2 then reorder the STACK */ |
426 | if (do_sort == 2) { |
427 | for (i = 0, tder = derlst; i < sk_const_ASN1_VALUE_num(sk); i++, tder++) |
428 | (void)sk_const_ASN1_VALUE_set(sk, i, tder->field); |
429 | } |
430 | OPENSSL_free(derlst); |
431 | OPENSSL_free(tmpdat); |
432 | return 1; |
433 | } |
434 | |
435 | static int asn1_i2d_ex_primitive(const ASN1_VALUE **pval, unsigned char **out, |
436 | const ASN1_ITEM *it, int tag, int aclass) |
437 | { |
438 | int len; |
439 | int utype; |
440 | int usetag; |
441 | int ndef = 0; |
442 | |
443 | utype = it->utype; |
444 | |
445 | /* |
446 | * Get length of content octets and maybe find out the underlying type. |
447 | */ |
448 | |
449 | len = asn1_ex_i2c(pval, NULL, &utype, it); |
450 | |
451 | /* |
452 | * If SEQUENCE, SET or OTHER then header is included in pseudo content |
453 | * octets so don't include tag+length. We need to check here because the |
454 | * call to asn1_ex_i2c() could change utype. |
455 | */ |
456 | if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) || |
457 | (utype == V_ASN1_OTHER)) |
458 | usetag = 0; |
459 | else |
460 | usetag = 1; |
461 | |
462 | /* -1 means omit type */ |
463 | |
464 | if (len == -1) |
465 | return 0; |
466 | |
467 | /* -2 return is special meaning use ndef */ |
468 | if (len == -2) { |
469 | ndef = 2; |
470 | len = 0; |
471 | } |
472 | |
473 | /* If not implicitly tagged get tag from underlying type */ |
474 | if (tag == -1) |
475 | tag = utype; |
476 | |
477 | /* Output tag+length followed by content octets */ |
478 | if (out) { |
479 | if (usetag) |
480 | ASN1_put_object(out, ndef, len, tag, aclass); |
481 | asn1_ex_i2c(pval, *out, &utype, it); |
482 | if (ndef) |
483 | ASN1_put_eoc(out); |
484 | else |
485 | *out += len; |
486 | } |
487 | |
488 | if (usetag) |
489 | return ASN1_object_size(ndef, len, tag); |
490 | return len; |
491 | } |
492 | |
493 | /* Produce content octets from a structure */ |
494 | |
495 | static int asn1_ex_i2c(const ASN1_VALUE **pval, unsigned char *cout, int *putype, |
496 | const ASN1_ITEM *it) |
497 | { |
498 | ASN1_BOOLEAN *tbool = NULL; |
499 | ASN1_STRING *strtmp; |
500 | ASN1_OBJECT *otmp; |
501 | int utype; |
502 | const unsigned char *cont; |
503 | unsigned char c; |
504 | int len; |
505 | const ASN1_PRIMITIVE_FUNCS *pf; |
506 | pf = it->funcs; |
507 | if (pf && pf->prim_i2c) |
508 | return pf->prim_i2c(pval, cout, putype, it); |
509 | |
510 | /* Should type be omitted? */ |
511 | if ((it->itype != ASN1_ITYPE_PRIMITIVE) |
512 | || (it->utype != V_ASN1_BOOLEAN)) { |
513 | if (*pval == NULL) |
514 | return -1; |
515 | } |
516 | |
517 | if (it->itype == ASN1_ITYPE_MSTRING) { |
518 | /* If MSTRING type set the underlying type */ |
519 | strtmp = (ASN1_STRING *)*pval; |
520 | utype = strtmp->type; |
521 | *putype = utype; |
522 | } else if (it->utype == V_ASN1_ANY) { |
523 | /* If ANY set type and pointer to value */ |
524 | ASN1_TYPE *typ; |
525 | typ = (ASN1_TYPE *)*pval; |
526 | utype = typ->type; |
527 | *putype = utype; |
528 | pval = (const ASN1_VALUE **)&typ->value.asn1_value; /* actually is const */ |
529 | } else |
530 | utype = *putype; |
531 | |
532 | switch (utype) { |
533 | case V_ASN1_OBJECT: |
534 | otmp = (ASN1_OBJECT *)*pval; |
535 | cont = otmp->data; |
536 | len = otmp->length; |
537 | if (cont == NULL || len == 0) |
538 | return -1; |
539 | break; |
540 | |
541 | case V_ASN1_NULL: |
542 | cont = NULL; |
543 | len = 0; |
544 | break; |
545 | |
546 | case V_ASN1_BOOLEAN: |
547 | tbool = (ASN1_BOOLEAN *)pval; |
548 | if (*tbool == -1) |
549 | return -1; |
550 | if (it->utype != V_ASN1_ANY) { |
551 | /* |
552 | * Default handling if value == size field then omit |
553 | */ |
554 | if (*tbool && (it->size > 0)) |
555 | return -1; |
556 | if (!*tbool && !it->size) |
557 | return -1; |
558 | } |
559 | c = (unsigned char)*tbool; |
560 | cont = &c; |
561 | len = 1; |
562 | break; |
563 | |
564 | case V_ASN1_BIT_STRING: |
565 | return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval, |
566 | cout ? &cout : NULL); |
567 | |
568 | case V_ASN1_INTEGER: |
569 | case V_ASN1_ENUMERATED: |
570 | /* |
571 | * These are all have the same content format as ASN1_INTEGER |
572 | */ |
573 | return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL); |
574 | |
575 | case V_ASN1_OCTET_STRING: |
576 | case V_ASN1_NUMERICSTRING: |
577 | case V_ASN1_PRINTABLESTRING: |
578 | case V_ASN1_T61STRING: |
579 | case V_ASN1_VIDEOTEXSTRING: |
580 | case V_ASN1_IA5STRING: |
581 | case V_ASN1_UTCTIME: |
582 | case V_ASN1_GENERALIZEDTIME: |
583 | case V_ASN1_GRAPHICSTRING: |
584 | case V_ASN1_VISIBLESTRING: |
585 | case V_ASN1_GENERALSTRING: |
586 | case V_ASN1_UNIVERSALSTRING: |
587 | case V_ASN1_BMPSTRING: |
588 | case V_ASN1_UTF8STRING: |
589 | case V_ASN1_SEQUENCE: |
590 | case V_ASN1_SET: |
591 | default: |
592 | /* All based on ASN1_STRING and handled the same */ |
593 | strtmp = (ASN1_STRING *)*pval; |
594 | /* Special handling for NDEF */ |
595 | if ((it->size == ASN1_TFLG_NDEF) |
596 | && (strtmp->flags & ASN1_STRING_FLAG_NDEF)) { |
597 | if (cout) { |
598 | strtmp->data = cout; |
599 | strtmp->length = 0; |
600 | } |
601 | /* Special return code */ |
602 | return -2; |
603 | } |
604 | cont = strtmp->data; |
605 | len = strtmp->length; |
606 | |
607 | break; |
608 | |
609 | } |
610 | if (cout && len) |
611 | memcpy(cout, cont, len); |
612 | return len; |
613 | } |
614 | |