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Commit | Line | Data |
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0f113f3e | 1 | /* |
c4d3c19b | 2 | * Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved. |
9d6b1ce6 | 3 | * |
365a2d99 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
2039c421 RS |
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 | |
9d6b1ce6 DSH |
8 | */ |
9 | ||
9d6b1ce6 | 10 | #include <stddef.h> |
d8770f3e | 11 | #include <string.h> |
b39fc560 | 12 | #include "internal/cryptlib.h" |
9d6b1ce6 DSH |
13 | #include <openssl/asn1.h> |
14 | #include <openssl/asn1t.h> | |
15 | #include <openssl/objects.h> | |
2e430277 | 16 | #include "internal/asn1_int.h" |
c1ee50aa | 17 | #include "asn1_locl.h" |
9d6b1ce6 | 18 | |
230fd6b7 | 19 | static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out, |
0f113f3e | 20 | const ASN1_ITEM *it, int tag, int aclass); |
230fd6b7 | 21 | static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out, |
0f113f3e MC |
22 | int skcontlen, const ASN1_ITEM *item, |
23 | int do_sort, int iclass); | |
230fd6b7 | 24 | static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out, |
0f113f3e | 25 | const ASN1_TEMPLATE *tt, int tag, int aclass); |
230fd6b7 | 26 | static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out, |
0f113f3e | 27 | const ASN1_ITEM *it, int flags); |
23dc1706 DSH |
28 | static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype, |
29 | const ASN1_ITEM *it); | |
230fd6b7 | 30 | |
0f113f3e MC |
31 | /* |
32 | * Top level i2d equivalents: the 'ndef' variant instructs the encoder to use | |
33 | * indefinite length constructed encoding, where appropriate | |
230fd6b7 DSH |
34 | */ |
35 | ||
8845420f | 36 | int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out, |
0f113f3e MC |
37 | const ASN1_ITEM *it) |
38 | { | |
39 | return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF); | |
40 | } | |
9d6b1ce6 | 41 | |
230fd6b7 | 42 | int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it) |
0f113f3e MC |
43 | { |
44 | return asn1_item_flags_i2d(val, out, it, 0); | |
45 | } | |
230fd6b7 | 46 | |
0f113f3e MC |
47 | /* |
48 | * Encode an ASN1 item, this is use by the standard 'i2d' function. 'out' | |
49 | * points to a buffer to output the data to. The new i2d has one additional | |
50 | * feature. If the output buffer is NULL (i.e. *out == NULL) then a buffer is | |
9d6b1ce6 DSH |
51 | * allocated and populated with the encoding. |
52 | */ | |
53 | ||
8845420f | 54 | static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out, |
0f113f3e MC |
55 | const ASN1_ITEM *it, int flags) |
56 | { | |
57 | if (out && !*out) { | |
58 | unsigned char *p, *buf; | |
59 | int len; | |
cdb10bae | 60 | |
0f113f3e MC |
61 | len = ASN1_item_ex_i2d(&val, NULL, it, -1, flags); |
62 | if (len <= 0) | |
63 | return len; | |
cdb10bae RS |
64 | if ((buf = OPENSSL_malloc(len)) == NULL) { |
65 | ASN1err(ASN1_F_ASN1_ITEM_FLAGS_I2D, ERR_R_MALLOC_FAILURE); | |
0f113f3e | 66 | return -1; |
cdb10bae | 67 | } |
0f113f3e MC |
68 | p = buf; |
69 | ASN1_item_ex_i2d(&val, &p, it, -1, flags); | |
70 | *out = buf; | |
71 | return len; | |
72 | } | |
73 | ||
74 | return ASN1_item_ex_i2d(&val, out, it, -1, flags); | |
75 | } | |
76 | ||
77 | /* | |
78 | * Encode an item, taking care of IMPLICIT tagging (if any). This function | |
79 | * performs the normal item handling: it can be used in external types. | |
9d6b1ce6 DSH |
80 | */ |
81 | ||
230fd6b7 | 82 | int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, |
0f113f3e MC |
83 | const ASN1_ITEM *it, int tag, int aclass) |
84 | { | |
85 | const ASN1_TEMPLATE *tt = NULL; | |
0f113f3e | 86 | int i, seqcontlen, seqlen, ndef = 1; |
0f113f3e MC |
87 | const ASN1_EXTERN_FUNCS *ef; |
88 | const ASN1_AUX *aux = it->funcs; | |
89 | ASN1_aux_cb *asn1_cb = 0; | |
90 | ||
91 | if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval) | |
92 | return 0; | |
93 | ||
94 | if (aux && aux->asn1_cb) | |
95 | asn1_cb = aux->asn1_cb; | |
96 | ||
97 | switch (it->itype) { | |
98 | ||
99 | case ASN1_ITYPE_PRIMITIVE: | |
100 | if (it->templates) | |
101 | return asn1_template_ex_i2d(pval, out, it->templates, | |
102 | tag, aclass); | |
103 | return asn1_i2d_ex_primitive(pval, out, it, tag, aclass); | |
0f113f3e MC |
104 | |
105 | case ASN1_ITYPE_MSTRING: | |
106 | return asn1_i2d_ex_primitive(pval, out, it, -1, aclass); | |
107 | ||
108 | case ASN1_ITYPE_CHOICE: | |
109 | if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL)) | |
110 | return 0; | |
111 | i = asn1_get_choice_selector(pval, it); | |
112 | if ((i >= 0) && (i < it->tcount)) { | |
113 | ASN1_VALUE **pchval; | |
114 | const ASN1_TEMPLATE *chtt; | |
115 | chtt = it->templates + i; | |
116 | pchval = asn1_get_field_ptr(pval, chtt); | |
117 | return asn1_template_ex_i2d(pchval, out, chtt, -1, aclass); | |
118 | } | |
119 | /* Fixme: error condition if selector out of range */ | |
120 | if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL)) | |
121 | return 0; | |
122 | break; | |
123 | ||
124 | case ASN1_ITYPE_EXTERN: | |
125 | /* If new style i2d it does all the work */ | |
126 | ef = it->funcs; | |
127 | return ef->asn1_ex_i2d(pval, out, it, tag, aclass); | |
128 | ||
0f113f3e MC |
129 | case ASN1_ITYPE_NDEF_SEQUENCE: |
130 | /* Use indefinite length constructed if requested */ | |
131 | if (aclass & ASN1_TFLG_NDEF) | |
132 | ndef = 2; | |
133 | /* fall through */ | |
134 | ||
135 | case ASN1_ITYPE_SEQUENCE: | |
136 | i = asn1_enc_restore(&seqcontlen, out, pval, it); | |
137 | /* An error occurred */ | |
138 | if (i < 0) | |
139 | return 0; | |
140 | /* We have a valid cached encoding... */ | |
141 | if (i > 0) | |
142 | return seqcontlen; | |
143 | /* Otherwise carry on */ | |
144 | seqcontlen = 0; | |
145 | /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */ | |
146 | if (tag == -1) { | |
147 | tag = V_ASN1_SEQUENCE; | |
148 | /* Retain any other flags in aclass */ | |
149 | aclass = (aclass & ~ASN1_TFLG_TAG_CLASS) | |
150 | | V_ASN1_UNIVERSAL; | |
151 | } | |
152 | if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL)) | |
153 | return 0; | |
154 | /* First work out sequence content length */ | |
155 | for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) { | |
156 | const ASN1_TEMPLATE *seqtt; | |
157 | ASN1_VALUE **pseqval; | |
56f9953c | 158 | int tmplen; |
0f113f3e MC |
159 | seqtt = asn1_do_adb(pval, tt, 1); |
160 | if (!seqtt) | |
161 | return 0; | |
162 | pseqval = asn1_get_field_ptr(pval, seqtt); | |
56f9953c DSH |
163 | tmplen = asn1_template_ex_i2d(pseqval, NULL, seqtt, -1, aclass); |
164 | if (tmplen == -1 || (tmplen > INT_MAX - seqcontlen)) | |
165 | return -1; | |
166 | seqcontlen += tmplen; | |
0f113f3e MC |
167 | } |
168 | ||
169 | seqlen = ASN1_object_size(ndef, seqcontlen, tag); | |
56f9953c | 170 | if (!out || seqlen == -1) |
0f113f3e MC |
171 | return seqlen; |
172 | /* Output SEQUENCE header */ | |
173 | ASN1_put_object(out, ndef, seqcontlen, tag, aclass); | |
174 | for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) { | |
175 | const ASN1_TEMPLATE *seqtt; | |
176 | ASN1_VALUE **pseqval; | |
177 | seqtt = asn1_do_adb(pval, tt, 1); | |
178 | if (!seqtt) | |
179 | return 0; | |
180 | pseqval = asn1_get_field_ptr(pval, seqtt); | |
181 | /* FIXME: check for errors in enhanced version */ | |
182 | asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass); | |
183 | } | |
184 | if (ndef == 2) | |
185 | ASN1_put_eoc(out); | |
186 | if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL)) | |
187 | return 0; | |
188 | return seqlen; | |
189 | ||
190 | default: | |
191 | return 0; | |
192 | ||
193 | } | |
194 | return 0; | |
195 | } | |
9d6b1ce6 | 196 | |
8845420f | 197 | static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out, |
0f113f3e MC |
198 | const ASN1_TEMPLATE *tt, int tag, int iclass) |
199 | { | |
200 | int i, ret, flags, ttag, tclass, ndef; | |
de17bd5d | 201 | ASN1_VALUE *tval; |
0f113f3e | 202 | flags = tt->flags; |
de17bd5d DSH |
203 | |
204 | /* | |
205 | * If field is embedded then val needs fixing so it is a pointer to | |
206 | * a pointer to a field. | |
207 | */ | |
208 | if (flags & ASN1_TFLG_EMBED) { | |
209 | tval = (ASN1_VALUE *)pval; | |
210 | pval = &tval; | |
211 | } | |
0f113f3e MC |
212 | /* |
213 | * Work out tag and class to use: tagging may come either from the | |
214 | * template or the arguments, not both because this would create | |
215 | * ambiguity. Additionally the iclass argument may contain some | |
216 | * additional flags which should be noted and passed down to other | |
217 | * levels. | |
218 | */ | |
219 | if (flags & ASN1_TFLG_TAG_MASK) { | |
220 | /* Error if argument and template tagging */ | |
221 | if (tag != -1) | |
222 | /* FIXME: error code here */ | |
223 | return -1; | |
224 | /* Get tagging from template */ | |
225 | ttag = tt->tag; | |
226 | tclass = flags & ASN1_TFLG_TAG_CLASS; | |
227 | } else if (tag != -1) { | |
228 | /* No template tagging, get from arguments */ | |
229 | ttag = tag; | |
230 | tclass = iclass & ASN1_TFLG_TAG_CLASS; | |
231 | } else { | |
232 | ttag = -1; | |
233 | tclass = 0; | |
234 | } | |
235 | /* | |
236 | * Remove any class mask from iflag. | |
237 | */ | |
238 | iclass &= ~ASN1_TFLG_TAG_CLASS; | |
239 | ||
240 | /* | |
241 | * At this point 'ttag' contains the outer tag to use, 'tclass' is the | |
242 | * class and iclass is any flags passed to this function. | |
243 | */ | |
244 | ||
245 | /* if template and arguments require ndef, use it */ | |
246 | if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF)) | |
247 | ndef = 2; | |
248 | else | |
249 | ndef = 1; | |
250 | ||
251 | if (flags & ASN1_TFLG_SK_MASK) { | |
252 | /* SET OF, SEQUENCE OF */ | |
253 | STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval; | |
254 | int isset, sktag, skaclass; | |
255 | int skcontlen, sklen; | |
256 | ASN1_VALUE *skitem; | |
257 | ||
258 | if (!*pval) | |
259 | return 0; | |
260 | ||
261 | if (flags & ASN1_TFLG_SET_OF) { | |
262 | isset = 1; | |
263 | /* 2 means we reorder */ | |
264 | if (flags & ASN1_TFLG_SEQUENCE_OF) | |
265 | isset = 2; | |
266 | } else | |
267 | isset = 0; | |
268 | ||
269 | /* | |
270 | * Work out inner tag value: if EXPLICIT or no tagging use underlying | |
271 | * type. | |
272 | */ | |
273 | if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG)) { | |
274 | sktag = ttag; | |
275 | skaclass = tclass; | |
276 | } else { | |
277 | skaclass = V_ASN1_UNIVERSAL; | |
278 | if (isset) | |
279 | sktag = V_ASN1_SET; | |
280 | else | |
281 | sktag = V_ASN1_SEQUENCE; | |
282 | } | |
283 | ||
284 | /* Determine total length of items */ | |
285 | skcontlen = 0; | |
286 | for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) { | |
56f9953c | 287 | int tmplen; |
0f113f3e | 288 | skitem = sk_ASN1_VALUE_value(sk, i); |
56f9953c DSH |
289 | tmplen = ASN1_item_ex_i2d(&skitem, NULL, ASN1_ITEM_ptr(tt->item), |
290 | -1, iclass); | |
291 | if (tmplen == -1 || (skcontlen > INT_MAX - tmplen)) | |
292 | return -1; | |
293 | skcontlen += tmplen; | |
0f113f3e MC |
294 | } |
295 | sklen = ASN1_object_size(ndef, skcontlen, sktag); | |
56f9953c DSH |
296 | if (sklen == -1) |
297 | return -1; | |
0f113f3e MC |
298 | /* If EXPLICIT need length of surrounding tag */ |
299 | if (flags & ASN1_TFLG_EXPTAG) | |
300 | ret = ASN1_object_size(ndef, sklen, ttag); | |
301 | else | |
302 | ret = sklen; | |
303 | ||
56f9953c | 304 | if (!out || ret == -1) |
0f113f3e MC |
305 | return ret; |
306 | ||
307 | /* Now encode this lot... */ | |
308 | /* EXPLICIT tag */ | |
309 | if (flags & ASN1_TFLG_EXPTAG) | |
310 | ASN1_put_object(out, ndef, sklen, ttag, tclass); | |
311 | /* SET or SEQUENCE and IMPLICIT tag */ | |
312 | ASN1_put_object(out, ndef, skcontlen, sktag, skaclass); | |
313 | /* And the stuff itself */ | |
314 | asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item), | |
315 | isset, iclass); | |
316 | if (ndef == 2) { | |
317 | ASN1_put_eoc(out); | |
318 | if (flags & ASN1_TFLG_EXPTAG) | |
319 | ASN1_put_eoc(out); | |
320 | } | |
321 | ||
322 | return ret; | |
323 | } | |
324 | ||
325 | if (flags & ASN1_TFLG_EXPTAG) { | |
326 | /* EXPLICIT tagging */ | |
327 | /* Find length of tagged item */ | |
328 | i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item), -1, iclass); | |
329 | if (!i) | |
330 | return 0; | |
331 | /* Find length of EXPLICIT tag */ | |
332 | ret = ASN1_object_size(ndef, i, ttag); | |
56f9953c | 333 | if (out && ret != -1) { |
0f113f3e MC |
334 | /* Output tag and item */ |
335 | ASN1_put_object(out, ndef, i, ttag, tclass); | |
336 | ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, iclass); | |
337 | if (ndef == 2) | |
338 | ASN1_put_eoc(out); | |
339 | } | |
340 | return ret; | |
341 | } | |
342 | ||
343 | /* Either normal or IMPLICIT tagging: combine class and flags */ | |
344 | return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), | |
345 | ttag, tclass | iclass); | |
230fd6b7 | 346 | |
9d6b1ce6 DSH |
347 | } |
348 | ||
349 | /* Temporary structure used to hold DER encoding of items for SET OF */ | |
350 | ||
0f113f3e MC |
351 | typedef struct { |
352 | unsigned char *data; | |
353 | int length; | |
354 | ASN1_VALUE *field; | |
9d6b1ce6 DSH |
355 | } DER_ENC; |
356 | ||
357 | static int der_cmp(const void *a, const void *b) | |
0f113f3e MC |
358 | { |
359 | const DER_ENC *d1 = a, *d2 = b; | |
360 | int cmplen, i; | |
361 | cmplen = (d1->length < d2->length) ? d1->length : d2->length; | |
362 | i = memcmp(d1->data, d2->data, cmplen); | |
363 | if (i) | |
364 | return i; | |
365 | return d1->length - d2->length; | |
366 | } | |
9d6b1ce6 DSH |
367 | |
368 | /* Output the content octets of SET OF or SEQUENCE OF */ | |
369 | ||
230fd6b7 | 370 | static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out, |
0f113f3e MC |
371 | int skcontlen, const ASN1_ITEM *item, |
372 | int do_sort, int iclass) | |
373 | { | |
374 | int i; | |
375 | ASN1_VALUE *skitem; | |
376 | unsigned char *tmpdat = NULL, *p = NULL; | |
377 | DER_ENC *derlst = NULL, *tder; | |
378 | if (do_sort) { | |
379 | /* Don't need to sort less than 2 items */ | |
380 | if (sk_ASN1_VALUE_num(sk) < 2) | |
381 | do_sort = 0; | |
382 | else { | |
383 | derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk) | |
384 | * sizeof(*derlst)); | |
90945fa3 | 385 | if (derlst == NULL) |
0f113f3e MC |
386 | return 0; |
387 | tmpdat = OPENSSL_malloc(skcontlen); | |
90945fa3 | 388 | if (tmpdat == NULL) { |
0f113f3e MC |
389 | OPENSSL_free(derlst); |
390 | return 0; | |
391 | } | |
392 | } | |
393 | } | |
394 | /* If not sorting just output each item */ | |
395 | if (!do_sort) { | |
396 | for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) { | |
397 | skitem = sk_ASN1_VALUE_value(sk, i); | |
398 | ASN1_item_ex_i2d(&skitem, out, item, -1, iclass); | |
399 | } | |
400 | return 1; | |
401 | } | |
402 | p = tmpdat; | |
403 | ||
404 | /* Doing sort: build up a list of each member's DER encoding */ | |
405 | for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) { | |
406 | skitem = sk_ASN1_VALUE_value(sk, i); | |
407 | tder->data = p; | |
408 | tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass); | |
409 | tder->field = skitem; | |
410 | } | |
411 | ||
412 | /* Now sort them */ | |
413 | qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp); | |
414 | /* Output sorted DER encoding */ | |
415 | p = *out; | |
416 | for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) { | |
417 | memcpy(p, tder->data, tder->length); | |
418 | p += tder->length; | |
419 | } | |
420 | *out = p; | |
421 | /* If do_sort is 2 then reorder the STACK */ | |
422 | if (do_sort == 2) { | |
423 | for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) | |
424 | (void)sk_ASN1_VALUE_set(sk, i, tder->field); | |
425 | } | |
426 | OPENSSL_free(derlst); | |
427 | OPENSSL_free(tmpdat); | |
428 | return 1; | |
429 | } | |
9d6b1ce6 | 430 | |
8845420f | 431 | static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out, |
0f113f3e MC |
432 | const ASN1_ITEM *it, int tag, int aclass) |
433 | { | |
434 | int len; | |
435 | int utype; | |
436 | int usetag; | |
437 | int ndef = 0; | |
438 | ||
439 | utype = it->utype; | |
440 | ||
441 | /* | |
442 | * Get length of content octets and maybe find out the underlying type. | |
443 | */ | |
444 | ||
445 | len = asn1_ex_i2c(pval, NULL, &utype, it); | |
446 | ||
447 | /* | |
448 | * If SEQUENCE, SET or OTHER then header is included in pseudo content | |
449 | * octets so don't include tag+length. We need to check here because the | |
450 | * call to asn1_ex_i2c() could change utype. | |
451 | */ | |
452 | if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) || | |
453 | (utype == V_ASN1_OTHER)) | |
454 | usetag = 0; | |
455 | else | |
456 | usetag = 1; | |
457 | ||
458 | /* -1 means omit type */ | |
459 | ||
460 | if (len == -1) | |
461 | return 0; | |
462 | ||
463 | /* -2 return is special meaning use ndef */ | |
464 | if (len == -2) { | |
465 | ndef = 2; | |
466 | len = 0; | |
467 | } | |
468 | ||
469 | /* If not implicitly tagged get tag from underlying type */ | |
470 | if (tag == -1) | |
471 | tag = utype; | |
472 | ||
473 | /* Output tag+length followed by content octets */ | |
474 | if (out) { | |
475 | if (usetag) | |
476 | ASN1_put_object(out, ndef, len, tag, aclass); | |
477 | asn1_ex_i2c(pval, *out, &utype, it); | |
478 | if (ndef) | |
479 | ASN1_put_eoc(out); | |
480 | else | |
481 | *out += len; | |
482 | } | |
483 | ||
484 | if (usetag) | |
485 | return ASN1_object_size(ndef, len, tag); | |
486 | return len; | |
487 | } | |
9d6b1ce6 DSH |
488 | |
489 | /* Produce content octets from a structure */ | |
490 | ||
23dc1706 DSH |
491 | static int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype, |
492 | const ASN1_ITEM *it) | |
0f113f3e MC |
493 | { |
494 | ASN1_BOOLEAN *tbool = NULL; | |
495 | ASN1_STRING *strtmp; | |
496 | ASN1_OBJECT *otmp; | |
497 | int utype; | |
498 | const unsigned char *cont; | |
499 | unsigned char c; | |
500 | int len; | |
501 | const ASN1_PRIMITIVE_FUNCS *pf; | |
502 | pf = it->funcs; | |
503 | if (pf && pf->prim_i2c) | |
504 | return pf->prim_i2c(pval, cout, putype, it); | |
505 | ||
506 | /* Should type be omitted? */ | |
507 | if ((it->itype != ASN1_ITYPE_PRIMITIVE) | |
508 | || (it->utype != V_ASN1_BOOLEAN)) { | |
509 | if (!*pval) | |
510 | return -1; | |
511 | } | |
512 | ||
513 | if (it->itype == ASN1_ITYPE_MSTRING) { | |
514 | /* If MSTRING type set the underlying type */ | |
515 | strtmp = (ASN1_STRING *)*pval; | |
516 | utype = strtmp->type; | |
517 | *putype = utype; | |
518 | } else if (it->utype == V_ASN1_ANY) { | |
519 | /* If ANY set type and pointer to value */ | |
520 | ASN1_TYPE *typ; | |
521 | typ = (ASN1_TYPE *)*pval; | |
522 | utype = typ->type; | |
523 | *putype = utype; | |
524 | pval = &typ->value.asn1_value; | |
525 | } else | |
526 | utype = *putype; | |
527 | ||
528 | switch (utype) { | |
529 | case V_ASN1_OBJECT: | |
530 | otmp = (ASN1_OBJECT *)*pval; | |
531 | cont = otmp->data; | |
532 | len = otmp->length; | |
53c9818e MC |
533 | if (cont == NULL || len == 0) |
534 | return -1; | |
0f113f3e MC |
535 | break; |
536 | ||
537 | case V_ASN1_NULL: | |
538 | cont = NULL; | |
539 | len = 0; | |
540 | break; | |
541 | ||
542 | case V_ASN1_BOOLEAN: | |
543 | tbool = (ASN1_BOOLEAN *)pval; | |
544 | if (*tbool == -1) | |
545 | return -1; | |
546 | if (it->utype != V_ASN1_ANY) { | |
547 | /* | |
548 | * Default handling if value == size field then omit | |
549 | */ | |
550 | if (*tbool && (it->size > 0)) | |
551 | return -1; | |
552 | if (!*tbool && !it->size) | |
553 | return -1; | |
554 | } | |
555 | c = (unsigned char)*tbool; | |
556 | cont = &c; | |
557 | len = 1; | |
558 | break; | |
559 | ||
560 | case V_ASN1_BIT_STRING: | |
561 | return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval, | |
562 | cout ? &cout : NULL); | |
0f113f3e MC |
563 | |
564 | case V_ASN1_INTEGER: | |
0f113f3e | 565 | case V_ASN1_ENUMERATED: |
0f113f3e MC |
566 | /* |
567 | * These are all have the same content format as ASN1_INTEGER | |
568 | */ | |
569 | return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL); | |
0f113f3e MC |
570 | |
571 | case V_ASN1_OCTET_STRING: | |
572 | case V_ASN1_NUMERICSTRING: | |
573 | case V_ASN1_PRINTABLESTRING: | |
574 | case V_ASN1_T61STRING: | |
575 | case V_ASN1_VIDEOTEXSTRING: | |
576 | case V_ASN1_IA5STRING: | |
577 | case V_ASN1_UTCTIME: | |
578 | case V_ASN1_GENERALIZEDTIME: | |
579 | case V_ASN1_GRAPHICSTRING: | |
580 | case V_ASN1_VISIBLESTRING: | |
581 | case V_ASN1_GENERALSTRING: | |
582 | case V_ASN1_UNIVERSALSTRING: | |
583 | case V_ASN1_BMPSTRING: | |
584 | case V_ASN1_UTF8STRING: | |
585 | case V_ASN1_SEQUENCE: | |
586 | case V_ASN1_SET: | |
587 | default: | |
588 | /* All based on ASN1_STRING and handled the same */ | |
589 | strtmp = (ASN1_STRING *)*pval; | |
590 | /* Special handling for NDEF */ | |
591 | if ((it->size == ASN1_TFLG_NDEF) | |
592 | && (strtmp->flags & ASN1_STRING_FLAG_NDEF)) { | |
593 | if (cout) { | |
594 | strtmp->data = cout; | |
595 | strtmp->length = 0; | |
596 | } | |
597 | /* Special return code */ | |
598 | return -2; | |
599 | } | |
600 | cont = strtmp->data; | |
601 | len = strtmp->length; | |
602 | ||
603 | break; | |
604 | ||
605 | } | |
606 | if (cout && len) | |
607 | memcpy(cout, cont, len); | |
608 | return len; | |
609 | } |