1 /*
2 * Copyright 2002-2023 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 "internal/cryptlib.h"
11 #include <openssl/asn1.h>
12 #include <openssl/x509v3.h>
13
14 #define ASN1_GEN_FLAG 0x10000
15 #define ASN1_GEN_FLAG_IMP (ASN1_GEN_FLAG|1)
16 #define ASN1_GEN_FLAG_EXP (ASN1_GEN_FLAG|2)
17 #define ASN1_GEN_FLAG_TAG (ASN1_GEN_FLAG|3)
18 #define ASN1_GEN_FLAG_BITWRAP (ASN1_GEN_FLAG|4)
19 #define ASN1_GEN_FLAG_OCTWRAP (ASN1_GEN_FLAG|5)
20 #define ASN1_GEN_FLAG_SEQWRAP (ASN1_GEN_FLAG|6)
21 #define ASN1_GEN_FLAG_SETWRAP (ASN1_GEN_FLAG|7)
22 #define ASN1_GEN_FLAG_FORMAT (ASN1_GEN_FLAG|8)
23
24 #define ASN1_GEN_STR(str,val) {str, sizeof(str) - 1, val}
25
26 #define ASN1_FLAG_EXP_MAX 20
27 /* Maximum number of nested sequences */
28 #define ASN1_GEN_SEQ_MAX_DEPTH 50
29
30 /* Input formats */
31
32 /* ASCII: default */
33 #define ASN1_GEN_FORMAT_ASCII 1
34 /* UTF8 */
35 #define ASN1_GEN_FORMAT_UTF8 2
36 /* Hex */
37 #define ASN1_GEN_FORMAT_HEX 3
38 /* List of bits */
39 #define ASN1_GEN_FORMAT_BITLIST 4
40
41 struct tag_name_st {
42 const char *strnam;
43 int len;
44 int tag;
45 };
46
47 typedef struct {
48 int exp_tag;
49 int exp_class;
50 int exp_constructed;
51 int exp_pad;
52 long exp_len;
53 } tag_exp_type;
54
55 typedef struct {
56 int imp_tag;
57 int imp_class;
58 int utype;
59 int format;
60 const char *str;
61 tag_exp_type exp_list[ASN1_FLAG_EXP_MAX];
62 int exp_count;
63 } tag_exp_arg;
64
65 static ASN1_TYPE *generate_v3(const char *str, X509V3_CTX *cnf, int depth,
66 int *perr);
67 static int bitstr_cb(const char *elem, int len, void *bitstr);
68 static int asn1_cb(const char *elem, int len, void *bitstr);
69 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class,
70 int exp_constructed, int exp_pad, int imp_ok);
71 static int parse_tagging(const char *vstart, int vlen, int *ptag,
72 int *pclass);
73 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf,
74 int depth, int *perr);
75 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype);
76 static int asn1_str2tag(const char *tagstr, int len);
77
ASN1_generate_nconf(const char * str,CONF * nconf)78 ASN1_TYPE *ASN1_generate_nconf(const char *str, CONF *nconf)
79 {
80 X509V3_CTX cnf;
81
82 if (!nconf)
83 return ASN1_generate_v3(str, NULL);
84
85 X509V3_set_nconf(&cnf, nconf);
86 return ASN1_generate_v3(str, &cnf);
87 }
88
ASN1_generate_v3(const char * str,X509V3_CTX * cnf)89 ASN1_TYPE *ASN1_generate_v3(const char *str, X509V3_CTX *cnf)
90 {
91 int err = 0;
92 ASN1_TYPE *ret = generate_v3(str, cnf, 0, &err);
93 if (err)
94 ERR_raise(ERR_LIB_ASN1, err);
95 return ret;
96 }
97
generate_v3(const char * str,X509V3_CTX * cnf,int depth,int * perr)98 static ASN1_TYPE *generate_v3(const char *str, X509V3_CTX *cnf, int depth,
99 int *perr)
100 {
101 ASN1_TYPE *ret;
102 tag_exp_arg asn1_tags;
103 tag_exp_type *etmp;
104
105 int i, len;
106
107 unsigned char *orig_der = NULL, *new_der = NULL;
108 const unsigned char *cpy_start;
109 unsigned char *p;
110 const unsigned char *cp;
111 int cpy_len;
112 long hdr_len = 0;
113 int hdr_constructed = 0, hdr_tag, hdr_class;
114 int r;
115
116 asn1_tags.imp_tag = -1;
117 asn1_tags.imp_class = -1;
118 asn1_tags.format = ASN1_GEN_FORMAT_ASCII;
119 asn1_tags.exp_count = 0;
120 if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0) {
121 *perr = ASN1_R_UNKNOWN_TAG;
122 return NULL;
123 }
124
125 if ((asn1_tags.utype == V_ASN1_SEQUENCE)
126 || (asn1_tags.utype == V_ASN1_SET)) {
127 if (!cnf) {
128 *perr = ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG;
129 return NULL;
130 }
131 if (depth >= ASN1_GEN_SEQ_MAX_DEPTH) {
132 *perr = ASN1_R_ILLEGAL_NESTED_TAGGING;
133 return NULL;
134 }
135 ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf, depth, perr);
136 } else
137 ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype);
138
139 if (!ret)
140 return NULL;
141
142 /* If no tagging return base type */
143 if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0))
144 return ret;
145
146 /* Generate the encoding */
147 cpy_len = i2d_ASN1_TYPE(ret, &orig_der);
148 ASN1_TYPE_free(ret);
149 ret = NULL;
150 /* Set point to start copying for modified encoding */
151 cpy_start = orig_der;
152
153 /* Do we need IMPLICIT tagging? */
154 if (asn1_tags.imp_tag != -1) {
155 /* If IMPLICIT we will replace the underlying tag */
156 /* Skip existing tag+len */
157 r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class,
158 cpy_len);
159 if (r & 0x80)
160 goto err;
161 /* Update copy length */
162 cpy_len -= cpy_start - orig_der;
163 /*
164 * For IMPLICIT tagging the length should match the original length
165 * and constructed flag should be consistent.
166 */
167 if (r & 0x1) {
168 /* Indefinite length constructed */
169 hdr_constructed = 2;
170 hdr_len = 0;
171 } else
172 /* Just retain constructed flag */
173 hdr_constructed = r & V_ASN1_CONSTRUCTED;
174 /*
175 * Work out new length with IMPLICIT tag: ignore constructed because
176 * it will mess up if indefinite length
177 */
178 len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag);
179 } else
180 len = cpy_len;
181
182 /* Work out length in any EXPLICIT, starting from end */
183
184 for (i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1;
185 i < asn1_tags.exp_count; i++, etmp--) {
186 /* Content length: number of content octets + any padding */
187 len += etmp->exp_pad;
188 etmp->exp_len = len;
189 /* Total object length: length including new header */
190 len = ASN1_object_size(0, len, etmp->exp_tag);
191 }
192
193 /* Allocate buffer for new encoding */
194
195 new_der = OPENSSL_malloc(len);
196 if (new_der == NULL)
197 goto err;
198
199 /* Generate tagged encoding */
200
201 p = new_der;
202
203 /* Output explicit tags first */
204
205 for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count;
206 i++, etmp++) {
207 ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len,
208 etmp->exp_tag, etmp->exp_class);
209 if (etmp->exp_pad)
210 *p++ = 0;
211 }
212
213 /* If IMPLICIT, output tag */
214
215 if (asn1_tags.imp_tag != -1) {
216 if (asn1_tags.imp_class == V_ASN1_UNIVERSAL
217 && (asn1_tags.imp_tag == V_ASN1_SEQUENCE
218 || asn1_tags.imp_tag == V_ASN1_SET))
219 hdr_constructed = V_ASN1_CONSTRUCTED;
220 ASN1_put_object(&p, hdr_constructed, hdr_len,
221 asn1_tags.imp_tag, asn1_tags.imp_class);
222 }
223
224 /* Copy across original encoding */
225 memcpy(p, cpy_start, cpy_len);
226
227 cp = new_der;
228
229 /* Obtain new ASN1_TYPE structure */
230 ret = d2i_ASN1_TYPE(NULL, &cp, len);
231
232 err:
233 OPENSSL_free(orig_der);
234 OPENSSL_free(new_der);
235
236 return ret;
237
238 }
239
asn1_cb(const char * elem,int len,void * bitstr)240 static int asn1_cb(const char *elem, int len, void *bitstr)
241 {
242 tag_exp_arg *arg = bitstr;
243 int i;
244 int utype;
245 int vlen = 0;
246 const char *p, *vstart = NULL;
247
248 int tmp_tag, tmp_class;
249
250 if (elem == NULL)
251 return -1;
252
253 for (i = 0, p = elem; i < len; p++, i++) {
254 /* Look for the ':' in name value pairs */
255 if (*p == ':') {
256 vstart = p + 1;
257 vlen = len - (vstart - elem);
258 len = p - elem;
259 break;
260 }
261 }
262
263 utype = asn1_str2tag(elem, len);
264
265 if (utype == -1) {
266 ERR_raise_data(ERR_LIB_ASN1, ASN1_R_UNKNOWN_TAG, "tag=%s", elem);
267 return -1;
268 }
269
270 /* If this is not a modifier mark end of string and exit */
271 if (!(utype & ASN1_GEN_FLAG)) {
272 arg->utype = utype;
273 arg->str = vstart;
274 /* If no value and not end of string, error */
275 if (!vstart && elem[len]) {
276 ERR_raise(ERR_LIB_ASN1, ASN1_R_MISSING_VALUE);
277 return -1;
278 }
279 return 0;
280 }
281
282 switch (utype) {
283
284 case ASN1_GEN_FLAG_IMP:
285 /* Check for illegal multiple IMPLICIT tagging */
286 if (arg->imp_tag != -1) {
287 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_NESTED_TAGGING);
288 return -1;
289 }
290 if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class))
291 return -1;
292 break;
293
294 case ASN1_GEN_FLAG_EXP:
295
296 if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class))
297 return -1;
298 if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0))
299 return -1;
300 break;
301
302 case ASN1_GEN_FLAG_SEQWRAP:
303 if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1))
304 return -1;
305 break;
306
307 case ASN1_GEN_FLAG_SETWRAP:
308 if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1))
309 return -1;
310 break;
311
312 case ASN1_GEN_FLAG_BITWRAP:
313 if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1))
314 return -1;
315 break;
316
317 case ASN1_GEN_FLAG_OCTWRAP:
318 if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1))
319 return -1;
320 break;
321
322 case ASN1_GEN_FLAG_FORMAT:
323 if (!vstart) {
324 ERR_raise(ERR_LIB_ASN1, ASN1_R_UNKNOWN_FORMAT);
325 return -1;
326 }
327 if (strncmp(vstart, "ASCII", 5) == 0)
328 arg->format = ASN1_GEN_FORMAT_ASCII;
329 else if (strncmp(vstart, "UTF8", 4) == 0)
330 arg->format = ASN1_GEN_FORMAT_UTF8;
331 else if (strncmp(vstart, "HEX", 3) == 0)
332 arg->format = ASN1_GEN_FORMAT_HEX;
333 else if (strncmp(vstart, "BITLIST", 7) == 0)
334 arg->format = ASN1_GEN_FORMAT_BITLIST;
335 else {
336 ERR_raise(ERR_LIB_ASN1, ASN1_R_UNKNOWN_FORMAT);
337 return -1;
338 }
339 break;
340
341 }
342
343 return 1;
344
345 }
346
parse_tagging(const char * vstart,int vlen,int * ptag,int * pclass)347 static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass)
348 {
349 long tag_num;
350 char *eptr;
351 if (!vstart)
352 return 0;
353 tag_num = strtoul(vstart, &eptr, 10);
354 /* Check we haven't gone past max length: should be impossible */
355 if (eptr && *eptr && (eptr > vstart + vlen))
356 return 0;
357 if (tag_num < 0) {
358 ERR_raise(ERR_LIB_ASN1, ASN1_R_INVALID_NUMBER);
359 return 0;
360 }
361 *ptag = tag_num;
362 /* If we have non numeric characters, parse them */
363 if (eptr)
364 vlen -= eptr - vstart;
365 else
366 vlen = 0;
367 if (vlen) {
368 switch (*eptr) {
369
370 case 'U':
371 *pclass = V_ASN1_UNIVERSAL;
372 break;
373
374 case 'A':
375 *pclass = V_ASN1_APPLICATION;
376 break;
377
378 case 'P':
379 *pclass = V_ASN1_PRIVATE;
380 break;
381
382 case 'C':
383 *pclass = V_ASN1_CONTEXT_SPECIFIC;
384 break;
385
386 default:
387 ERR_raise_data(ERR_LIB_ASN1, ASN1_R_INVALID_MODIFIER,
388 "Char=%c", *eptr);
389 return 0;
390
391 }
392 } else
393 *pclass = V_ASN1_CONTEXT_SPECIFIC;
394
395 return 1;
396
397 }
398
399 /* Handle multiple types: SET and SEQUENCE */
400
asn1_multi(int utype,const char * section,X509V3_CTX * cnf,int depth,int * perr)401 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf,
402 int depth, int *perr)
403 {
404 ASN1_TYPE *ret = NULL;
405 STACK_OF(ASN1_TYPE) *sk = NULL;
406 STACK_OF(CONF_VALUE) *sect = NULL;
407 unsigned char *der = NULL;
408 int derlen;
409 int i;
410 sk = sk_ASN1_TYPE_new_null();
411 if (!sk)
412 goto bad;
413 if (section) {
414 if (!cnf)
415 goto bad;
416 sect = X509V3_get_section(cnf, (char *)section);
417 if (!sect)
418 goto bad;
419 for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
420 ASN1_TYPE *typ =
421 generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf,
422 depth + 1, perr);
423 if (!typ)
424 goto bad;
425 if (!sk_ASN1_TYPE_push(sk, typ))
426 goto bad;
427 }
428 }
429
430 /*
431 * Now we has a STACK of the components, convert to the correct form
432 */
433
434 if (utype == V_ASN1_SET)
435 derlen = i2d_ASN1_SET_ANY(sk, &der);
436 else
437 derlen = i2d_ASN1_SEQUENCE_ANY(sk, &der);
438
439 if (derlen < 0)
440 goto bad;
441 if ((ret = ASN1_TYPE_new()) == NULL)
442 goto bad;
443 if ((ret->value.asn1_string = ASN1_STRING_type_new(utype)) == NULL)
444 goto bad;
445
446 ret->type = utype;
447 ret->value.asn1_string->data = der;
448 ret->value.asn1_string->length = derlen;
449
450 der = NULL;
451
452 bad:
453
454 OPENSSL_free(der);
455
456 sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free);
457 X509V3_section_free(cnf, sect);
458
459 return ret;
460 }
461
append_exp(tag_exp_arg * arg,int exp_tag,int exp_class,int exp_constructed,int exp_pad,int imp_ok)462 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class,
463 int exp_constructed, int exp_pad, int imp_ok)
464 {
465 tag_exp_type *exp_tmp;
466 /* Can only have IMPLICIT if permitted */
467 if ((arg->imp_tag != -1) && !imp_ok) {
468 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_IMPLICIT_TAG);
469 return 0;
470 }
471
472 if (arg->exp_count == ASN1_FLAG_EXP_MAX) {
473 ERR_raise(ERR_LIB_ASN1, ASN1_R_DEPTH_EXCEEDED);
474 return 0;
475 }
476
477 exp_tmp = &arg->exp_list[arg->exp_count++];
478
479 /*
480 * If IMPLICIT set tag to implicit value then reset implicit tag since it
481 * has been used.
482 */
483 if (arg->imp_tag != -1) {
484 exp_tmp->exp_tag = arg->imp_tag;
485 exp_tmp->exp_class = arg->imp_class;
486 arg->imp_tag = -1;
487 arg->imp_class = -1;
488 } else {
489 exp_tmp->exp_tag = exp_tag;
490 exp_tmp->exp_class = exp_class;
491 }
492 exp_tmp->exp_constructed = exp_constructed;
493 exp_tmp->exp_pad = exp_pad;
494
495 return 1;
496 }
497
asn1_str2tag(const char * tagstr,int len)498 static int asn1_str2tag(const char *tagstr, int len)
499 {
500 unsigned int i;
501 static const struct tag_name_st *tntmp, tnst[] = {
502 ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN),
503 ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN),
504 ASN1_GEN_STR("NULL", V_ASN1_NULL),
505 ASN1_GEN_STR("INT", V_ASN1_INTEGER),
506 ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER),
507 ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED),
508 ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED),
509 ASN1_GEN_STR("OID", V_ASN1_OBJECT),
510 ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT),
511 ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME),
512 ASN1_GEN_STR("UTC", V_ASN1_UTCTIME),
513 ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME),
514 ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME),
515 ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING),
516 ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING),
517 ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING),
518 ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING),
519 ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING),
520 ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING),
521 ASN1_GEN_STR("IA5", V_ASN1_IA5STRING),
522 ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING),
523 ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING),
524 ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING),
525 ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING),
526 ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING),
527 ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING),
528 ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING),
529 ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING),
530 ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING),
531 ASN1_GEN_STR("T61", V_ASN1_T61STRING),
532 ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING),
533 ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING),
534 ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING),
535 ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING),
536 ASN1_GEN_STR("NUMERIC", V_ASN1_NUMERICSTRING),
537 ASN1_GEN_STR("NUMERICSTRING", V_ASN1_NUMERICSTRING),
538
539 /* Special cases */
540 ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE),
541 ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE),
542 ASN1_GEN_STR("SET", V_ASN1_SET),
543 /* type modifiers */
544 /* Explicit tag */
545 ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP),
546 ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP),
547 /* Implicit tag */
548 ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP),
549 ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP),
550 /* OCTET STRING wrapper */
551 ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP),
552 /* SEQUENCE wrapper */
553 ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP),
554 /* SET wrapper */
555 ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP),
556 /* BIT STRING wrapper */
557 ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP),
558 ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT),
559 ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT),
560 };
561
562 if (len == -1)
563 len = strlen(tagstr);
564
565 tntmp = tnst;
566 for (i = 0; i < OSSL_NELEM(tnst); i++, tntmp++) {
567 if ((len == tntmp->len)
568 && (OPENSSL_strncasecmp(tntmp->strnam, tagstr, len) == 0))
569 return tntmp->tag;
570 }
571
572 return -1;
573 }
574
asn1_str2type(const char * str,int format,int utype)575 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype)
576 {
577 ASN1_TYPE *atmp = NULL;
578 CONF_VALUE vtmp;
579 unsigned char *rdata;
580 long rdlen;
581 int no_unused = 1;
582
583 if ((atmp = ASN1_TYPE_new()) == NULL) {
584 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
585 return NULL;
586 }
587
588 if (!str)
589 str = "";
590
591 switch (utype) {
592
593 case V_ASN1_NULL:
594 if (str && *str) {
595 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_NULL_VALUE);
596 goto bad_form;
597 }
598 break;
599
600 case V_ASN1_BOOLEAN:
601 if (format != ASN1_GEN_FORMAT_ASCII) {
602 ERR_raise(ERR_LIB_ASN1, ASN1_R_NOT_ASCII_FORMAT);
603 goto bad_form;
604 }
605 vtmp.name = NULL;
606 vtmp.section = NULL;
607 vtmp.value = (char *)str;
608 if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean)) {
609 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_BOOLEAN);
610 goto bad_str;
611 }
612 break;
613
614 case V_ASN1_INTEGER:
615 case V_ASN1_ENUMERATED:
616 if (format != ASN1_GEN_FORMAT_ASCII) {
617 ERR_raise(ERR_LIB_ASN1, ASN1_R_INTEGER_NOT_ASCII_FORMAT);
618 goto bad_form;
619 }
620 if ((atmp->value.integer
621 = s2i_ASN1_INTEGER(NULL, str)) == NULL) {
622 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_INTEGER);
623 goto bad_str;
624 }
625 break;
626
627 case V_ASN1_OBJECT:
628 if (format != ASN1_GEN_FORMAT_ASCII) {
629 ERR_raise(ERR_LIB_ASN1, ASN1_R_OBJECT_NOT_ASCII_FORMAT);
630 goto bad_form;
631 }
632 if ((atmp->value.object = OBJ_txt2obj(str, 0)) == NULL) {
633 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_OBJECT);
634 goto bad_str;
635 }
636 break;
637
638 case V_ASN1_UTCTIME:
639 case V_ASN1_GENERALIZEDTIME:
640 if (format != ASN1_GEN_FORMAT_ASCII) {
641 ERR_raise(ERR_LIB_ASN1, ASN1_R_TIME_NOT_ASCII_FORMAT);
642 goto bad_form;
643 }
644 if ((atmp->value.asn1_string = ASN1_STRING_new()) == NULL) {
645 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
646 goto bad_str;
647 }
648 if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) {
649 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
650 goto bad_str;
651 }
652 atmp->value.asn1_string->type = utype;
653 if (!ASN1_TIME_check(atmp->value.asn1_string)) {
654 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_TIME_VALUE);
655 goto bad_str;
656 }
657
658 break;
659
660 case V_ASN1_BMPSTRING:
661 case V_ASN1_PRINTABLESTRING:
662 case V_ASN1_IA5STRING:
663 case V_ASN1_T61STRING:
664 case V_ASN1_UTF8STRING:
665 case V_ASN1_VISIBLESTRING:
666 case V_ASN1_UNIVERSALSTRING:
667 case V_ASN1_GENERALSTRING:
668 case V_ASN1_NUMERICSTRING:
669 if (format == ASN1_GEN_FORMAT_ASCII)
670 format = MBSTRING_ASC;
671 else if (format == ASN1_GEN_FORMAT_UTF8)
672 format = MBSTRING_UTF8;
673 else {
674 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_FORMAT);
675 goto bad_form;
676 }
677
678 if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str,
679 -1, format, ASN1_tag2bit(utype)) <= 0) {
680 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
681 goto bad_str;
682 }
683
684 break;
685
686 case V_ASN1_BIT_STRING:
687 case V_ASN1_OCTET_STRING:
688 if ((atmp->value.asn1_string = ASN1_STRING_new()) == NULL) {
689 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
690 goto bad_form;
691 }
692
693 if (format == ASN1_GEN_FORMAT_HEX) {
694 if ((rdata = OPENSSL_hexstr2buf(str, &rdlen)) == NULL) {
695 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_HEX);
696 goto bad_str;
697 }
698 atmp->value.asn1_string->data = rdata;
699 atmp->value.asn1_string->length = rdlen;
700 atmp->value.asn1_string->type = utype;
701 } else if (format == ASN1_GEN_FORMAT_ASCII) {
702 if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) {
703 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
704 goto bad_str;
705 }
706 } else if ((format == ASN1_GEN_FORMAT_BITLIST)
707 && (utype == V_ASN1_BIT_STRING)) {
708 if (!CONF_parse_list
709 (str, ',', 1, bitstr_cb, atmp->value.bit_string)) {
710 ERR_raise(ERR_LIB_ASN1, ASN1_R_LIST_ERROR);
711 goto bad_str;
712 }
713 no_unused = 0;
714
715 } else {
716 ERR_raise(ERR_LIB_ASN1, ASN1_R_ILLEGAL_BITSTRING_FORMAT);
717 goto bad_form;
718 }
719
720 if ((utype == V_ASN1_BIT_STRING) && no_unused) {
721 atmp->value.asn1_string->flags
722 &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
723 atmp->value.asn1_string->flags |= ASN1_STRING_FLAG_BITS_LEFT;
724 }
725
726 break;
727
728 default:
729 ERR_raise(ERR_LIB_ASN1, ASN1_R_UNSUPPORTED_TYPE);
730 goto bad_str;
731 }
732
733 atmp->type = utype;
734 return atmp;
735
736 bad_str:
737 ERR_add_error_data(2, "string=", str);
738 bad_form:
739
740 ASN1_TYPE_free(atmp);
741 return NULL;
742
743 }
744
bitstr_cb(const char * elem,int len,void * bitstr)745 static int bitstr_cb(const char *elem, int len, void *bitstr)
746 {
747 long bitnum;
748 char *eptr;
749 if (!elem)
750 return 0;
751 bitnum = strtoul(elem, &eptr, 10);
752 if (eptr && *eptr && (eptr != elem + len))
753 return 0;
754 if (bitnum < 0) {
755 ERR_raise(ERR_LIB_ASN1, ASN1_R_INVALID_NUMBER);
756 return 0;
757 }
758 if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1)) {
759 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
760 return 0;
761 }
762 return 1;
763 }
764
mask_cb(const char * elem,int len,void * arg)765 static int mask_cb(const char *elem, int len, void *arg)
766 {
767 unsigned long *pmask = arg, tmpmask;
768 int tag;
769 if (elem == NULL)
770 return 0;
771 if ((len == 3) && (strncmp(elem, "DIR", 3) == 0)) {
772 *pmask |= B_ASN1_DIRECTORYSTRING;
773 return 1;
774 }
775 tag = asn1_str2tag(elem, len);
776 if (!tag || (tag & ASN1_GEN_FLAG))
777 return 0;
778 tmpmask = ASN1_tag2bit(tag);
779 if (!tmpmask)
780 return 0;
781 *pmask |= tmpmask;
782 return 1;
783 }
784
ASN1_str2mask(const char * str,unsigned long * pmask)785 int ASN1_str2mask(const char *str, unsigned long *pmask)
786 {
787 *pmask = 0;
788 return CONF_parse_list(str, '|', 1, mask_cb, pmask);
789 }
790