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[thirdparty/openssl.git] / crypto / asn1 / asn1_gen.c
1 /* asn1_gen.c */
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 2002.
4 */
5 /* ====================================================================
6 * Copyright (c) 2002 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59 #include "cryptlib.h"
60 #include <openssl/asn1.h>
61 #include <openssl/x509v3.h>
62
63 #define ASN1_GEN_FLAG 0x10000
64 #define ASN1_GEN_FLAG_IMP (ASN1_GEN_FLAG|1)
65 #define ASN1_GEN_FLAG_EXP (ASN1_GEN_FLAG|2)
66 #define ASN1_GEN_FLAG_TAG (ASN1_GEN_FLAG|3)
67 #define ASN1_GEN_FLAG_BITWRAP (ASN1_GEN_FLAG|4)
68 #define ASN1_GEN_FLAG_OCTWRAP (ASN1_GEN_FLAG|5)
69 #define ASN1_GEN_FLAG_SEQWRAP (ASN1_GEN_FLAG|6)
70 #define ASN1_GEN_FLAG_SETWRAP (ASN1_GEN_FLAG|7)
71 #define ASN1_GEN_FLAG_FORMAT (ASN1_GEN_FLAG|8)
72
73 #define ASN1_GEN_STR(str,val) {str, sizeof(str) - 1, val}
74
75 #define ASN1_FLAG_EXP_MAX 20
76
77 /* Input formats */
78
79 /* ASCII: default */
80 #define ASN1_GEN_FORMAT_ASCII 1
81 /* UTF8 */
82 #define ASN1_GEN_FORMAT_UTF8 2
83 /* Hex */
84 #define ASN1_GEN_FORMAT_HEX 3
85 /* List of bits */
86 #define ASN1_GEN_FORMAT_BITLIST 4
87
88
89 struct tag_name_st
90 {
91 const char *strnam;
92 int len;
93 int tag;
94 };
95
96 typedef struct
97 {
98 int exp_tag;
99 int exp_class;
100 int exp_constructed;
101 int exp_pad;
102 long exp_len;
103 } tag_exp_type;
104
105 typedef struct
106 {
107 int imp_tag;
108 int imp_class;
109 int utype;
110 int format;
111 const char *str;
112 tag_exp_type exp_list[ASN1_FLAG_EXP_MAX];
113 int exp_count;
114 } tag_exp_arg;
115
116 static int bitstr_cb(const char *elem, int len, void *bitstr);
117 static int asn1_cb(const char *elem, int len, void *bitstr);
118 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, int exp_constructed, int exp_pad, int imp_ok);
119 static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass);
120 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf);
121 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype);
122 static int asn1_str2tag(const char *tagstr, int len);
123
124 ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf)
125 {
126 X509V3_CTX cnf;
127
128 if (!nconf)
129 return ASN1_generate_v3(str, NULL);
130
131 X509V3_set_nconf(&cnf, nconf);
132 return ASN1_generate_v3(str, &cnf);
133 }
134
135 ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf)
136 {
137 ASN1_TYPE *ret;
138 tag_exp_arg asn1_tags;
139 tag_exp_type *etmp;
140
141 int i, len;
142
143 unsigned char *orig_der = NULL, *new_der = NULL;
144 const unsigned char *cpy_start;
145 unsigned char *p;
146 const unsigned char *cp;
147 int cpy_len;
148 size_t hdr_len;
149 int hdr_constructed = 0, hdr_tag, hdr_class;
150 int r;
151
152 asn1_tags.imp_tag = -1;
153 asn1_tags.imp_class = -1;
154 asn1_tags.format = ASN1_GEN_FORMAT_ASCII;
155 asn1_tags.exp_count = 0;
156 if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0)
157 return NULL;
158
159 if ((asn1_tags.utype == V_ASN1_SEQUENCE) || (asn1_tags.utype == V_ASN1_SET))
160 {
161 if (!cnf)
162 {
163 ASN1err(ASN1_F_ASN1_GENERATE_V3, ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG);
164 return NULL;
165 }
166 ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf);
167 }
168 else
169 ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype);
170
171 if (!ret)
172 return NULL;
173
174 /* If no tagging return base type */
175 if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0))
176 return ret;
177
178 /* Generate the encoding */
179 cpy_len = i2d_ASN1_TYPE(ret, &orig_der);
180 ASN1_TYPE_free(ret);
181 ret = NULL;
182 /* Set point to start copying for modified encoding */
183 cpy_start = orig_der;
184
185 /* Do we need IMPLICIT tagging? */
186 if (asn1_tags.imp_tag != -1)
187 {
188 /* If IMPLICIT we will replace the underlying tag */
189 /* Skip existing tag+len */
190 r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class, cpy_len);
191 if (r & 0x80)
192 goto err;
193 /* Update copy length */
194 cpy_len -= cpy_start - orig_der;
195 /* For IMPLICIT tagging the length should match the
196 * original length and constructed flag should be
197 * consistent.
198 */
199 if (r & 0x1)
200 {
201 /* Indefinite length constructed */
202 hdr_constructed = 2;
203 hdr_len = 0;
204 }
205 else
206 /* Just retain constructed flag */
207 hdr_constructed = r & V_ASN1_CONSTRUCTED;
208 /* Work out new length with IMPLICIT tag: ignore constructed
209 * because it will mess up if indefinite length
210 */
211 len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag);
212 }
213 else
214 len = cpy_len;
215
216 /* Work out length in any EXPLICIT, starting from end */
217
218 for(i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1; i < asn1_tags.exp_count; i++, etmp--)
219 {
220 /* Content length: number of content octets + any padding */
221 len += etmp->exp_pad;
222 etmp->exp_len = len;
223 /* Total object length: length including new header */
224 len = ASN1_object_size(0, len, etmp->exp_tag);
225 }
226
227 /* Allocate buffer for new encoding */
228
229 new_der = OPENSSL_malloc(len);
230
231 /* Generate tagged encoding */
232
233 p = new_der;
234
235 /* Output explicit tags first */
236
237 for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count; i++, etmp++)
238 {
239 ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len,
240 etmp->exp_tag, etmp->exp_class);
241 if (etmp->exp_pad)
242 *p++ = 0;
243 }
244
245 /* If IMPLICIT, output tag */
246
247 if (asn1_tags.imp_tag != -1)
248 ASN1_put_object(&p, hdr_constructed, hdr_len,
249 asn1_tags.imp_tag, asn1_tags.imp_class);
250
251 /* Copy across original encoding */
252 memcpy(p, cpy_start, cpy_len);
253
254 cp = new_der;
255
256 /* Obtain new ASN1_TYPE structure */
257 ret = d2i_ASN1_TYPE(NULL, &cp, len);
258
259 err:
260 if (orig_der)
261 OPENSSL_free(orig_der);
262 if (new_der)
263 OPENSSL_free(new_der);
264
265 return ret;
266
267 }
268
269 static int asn1_cb(const char *elem, int len, void *bitstr)
270 {
271 tag_exp_arg *arg = bitstr;
272 int i;
273 int utype;
274 int vlen = 0;
275 const char *p, *vstart = NULL;
276
277 int tmp_tag, tmp_class;
278
279 for(i = 0, p = elem; i < len; p++, i++)
280 {
281 /* Look for the ':' in name value pairs */
282 if (*p == ':')
283 {
284 vstart = p + 1;
285 vlen = len - (vstart - elem);
286 len = p - elem;
287 break;
288 }
289 }
290
291 utype = asn1_str2tag(elem, len);
292
293 if (utype == -1)
294 {
295 ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKNOWN_TAG);
296 ERR_add_error_data(2, "tag=", elem);
297 return -1;
298 }
299
300 /* If this is not a modifier mark end of string and exit */
301 if (!(utype & ASN1_GEN_FLAG))
302 {
303 arg->utype = utype;
304 arg->str = vstart;
305 /* If no value and not end of string, error */
306 if (!vstart && elem[len])
307 {
308 ASN1err(ASN1_F_ASN1_CB, ASN1_R_MISSING_VALUE);
309 return -1;
310 }
311 return 0;
312 }
313
314 switch(utype)
315 {
316
317 case ASN1_GEN_FLAG_IMP:
318 /* Check for illegal multiple IMPLICIT tagging */
319 if (arg->imp_tag != -1)
320 {
321 ASN1err(ASN1_F_ASN1_CB, ASN1_R_ILLEGAL_NESTED_TAGGING);
322 return -1;
323 }
324 if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class))
325 return -1;
326 break;
327
328 case ASN1_GEN_FLAG_EXP:
329
330 if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class))
331 return -1;
332 if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0))
333 return -1;
334 break;
335
336 case ASN1_GEN_FLAG_SEQWRAP:
337 if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1))
338 return -1;
339 break;
340
341 case ASN1_GEN_FLAG_SETWRAP:
342 if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1))
343 return -1;
344 break;
345
346 case ASN1_GEN_FLAG_BITWRAP:
347 if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1))
348 return -1;
349 break;
350
351 case ASN1_GEN_FLAG_OCTWRAP:
352 if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1))
353 return -1;
354 break;
355
356 case ASN1_GEN_FLAG_FORMAT:
357 if (!strncmp(vstart, "ASCII", 5))
358 arg->format = ASN1_GEN_FORMAT_ASCII;
359 else if (!strncmp(vstart, "UTF8", 4))
360 arg->format = ASN1_GEN_FORMAT_UTF8;
361 else if (!strncmp(vstart, "HEX", 3))
362 arg->format = ASN1_GEN_FORMAT_HEX;
363 else if (!strncmp(vstart, "BITLIST", 3))
364 arg->format = ASN1_GEN_FORMAT_BITLIST;
365 else
366 {
367 ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKOWN_FORMAT);
368 return -1;
369 }
370 break;
371
372 }
373
374 return 1;
375
376 }
377
378 static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass)
379 {
380 char erch[2];
381 long tag_num;
382 char *eptr;
383 if (!vstart)
384 return 0;
385 tag_num = strtoul(vstart, &eptr, 10);
386 /* Check we haven't gone past max length: should be impossible */
387 if (eptr && *eptr && (eptr > vstart + vlen))
388 return 0;
389 if (tag_num < 0)
390 {
391 ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_NUMBER);
392 return 0;
393 }
394 *ptag = tag_num;
395 /* If we have non numeric characters, parse them */
396 if (eptr)
397 vlen -= eptr - vstart;
398 else
399 vlen = 0;
400 if (vlen)
401 {
402 switch (*eptr)
403 {
404
405 case 'U':
406 *pclass = V_ASN1_UNIVERSAL;
407 break;
408
409 case 'A':
410 *pclass = V_ASN1_APPLICATION;
411 break;
412
413 case 'P':
414 *pclass = V_ASN1_PRIVATE;
415 break;
416
417 case 'C':
418 *pclass = V_ASN1_CONTEXT_SPECIFIC;
419 break;
420
421 default:
422 erch[0] = *eptr;
423 erch[1] = 0;
424 ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_MODIFIER);
425 ERR_add_error_data(2, "Char=", erch);
426 return 0;
427 break;
428
429 }
430 }
431 else
432 *pclass = V_ASN1_CONTEXT_SPECIFIC;
433
434 return 1;
435
436 }
437
438 /* Handle multiple types: SET and SEQUENCE */
439
440 static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf)
441 {
442 ASN1_TYPE *ret = NULL;
443 STACK_OF(ASN1_TYPE) *sk = NULL;
444 STACK_OF(CONF_VALUE) *sect = NULL;
445 unsigned char *der = NULL;
446 int derlen;
447 int i;
448 sk = sk_ASN1_TYPE_new_null();
449 if (section)
450 {
451 if (!cnf)
452 goto bad;
453 sect = X509V3_get_section(cnf, (char *)section);
454 if (!sect)
455 goto bad;
456 for (i = 0; i < sk_CONF_VALUE_num(sect); i++)
457 {
458 ASN1_TYPE *typ = ASN1_generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf);
459 if (!typ)
460 goto bad;
461 sk_ASN1_TYPE_push(sk, typ);
462 }
463 }
464
465 /* Now we has a STACK of the components, convert to the correct form */
466
467 if (utype == V_ASN1_SET)
468 derlen = i2d_ASN1_SET_ANY(sk, &der);
469 else
470 derlen = i2d_ASN1_SEQUENCE_ANY(sk, &der);
471
472 if (!(ret = ASN1_TYPE_new()))
473 goto bad;
474
475 if (!(ret->value.asn1_string = ASN1_STRING_type_new(utype)))
476 goto bad;
477
478 ret->type = utype;
479
480 ret->value.asn1_string->data = der;
481 ret->value.asn1_string->length = derlen;
482
483 der = NULL;
484
485 bad:
486
487 if (der)
488 OPENSSL_free(der);
489
490 if (sk)
491 sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free);
492 if (sect)
493 X509V3_section_free(cnf, sect);
494
495 return ret;
496 }
497
498 static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, int exp_constructed, int exp_pad, int imp_ok)
499 {
500 tag_exp_type *exp_tmp;
501 /* Can only have IMPLICIT if permitted */
502 if ((arg->imp_tag != -1) && !imp_ok)
503 {
504 ASN1err(ASN1_F_APPEND_EXP, ASN1_R_ILLEGAL_IMPLICIT_TAG);
505 return 0;
506 }
507
508 if (arg->exp_count == ASN1_FLAG_EXP_MAX)
509 {
510 ASN1err(ASN1_F_APPEND_EXP, ASN1_R_DEPTH_EXCEEDED);
511 return 0;
512 }
513
514 exp_tmp = &arg->exp_list[arg->exp_count++];
515
516 /* If IMPLICIT set tag to implicit value then
517 * reset implicit tag since it has been used.
518 */
519 if (arg->imp_tag != -1)
520 {
521 exp_tmp->exp_tag = arg->imp_tag;
522 exp_tmp->exp_class = arg->imp_class;
523 arg->imp_tag = -1;
524 arg->imp_class = -1;
525 }
526 else
527 {
528 exp_tmp->exp_tag = exp_tag;
529 exp_tmp->exp_class = exp_class;
530 }
531 exp_tmp->exp_constructed = exp_constructed;
532 exp_tmp->exp_pad = exp_pad;
533
534 return 1;
535 }
536
537
538 static int asn1_str2tag(const char *tagstr, int len)
539 {
540 unsigned int i;
541 static const struct tag_name_st *tntmp, tnst [] = {
542 ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN),
543 ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN),
544 ASN1_GEN_STR("NULL", V_ASN1_NULL),
545 ASN1_GEN_STR("INT", V_ASN1_INTEGER),
546 ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER),
547 ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED),
548 ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED),
549 ASN1_GEN_STR("OID", V_ASN1_OBJECT),
550 ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT),
551 ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME),
552 ASN1_GEN_STR("UTC", V_ASN1_UTCTIME),
553 ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME),
554 ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME),
555 ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING),
556 ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING),
557 ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING),
558 ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING),
559 ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING),
560 ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING),
561 ASN1_GEN_STR("IA5", V_ASN1_IA5STRING),
562 ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING),
563 ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING),
564 ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING),
565 ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING),
566 ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING),
567 ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING),
568 ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING),
569 ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING),
570 ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING),
571 ASN1_GEN_STR("T61", V_ASN1_T61STRING),
572 ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING),
573 ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING),
574 ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING),
575 ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING),
576 ASN1_GEN_STR("NUMERIC", V_ASN1_NUMERICSTRING),
577 ASN1_GEN_STR("NUMERICSTRING", V_ASN1_NUMERICSTRING),
578
579 /* Special cases */
580 ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE),
581 ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE),
582 ASN1_GEN_STR("SET", V_ASN1_SET),
583 /* type modifiers */
584 /* Explicit tag */
585 ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP),
586 ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP),
587 /* Implicit tag */
588 ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP),
589 ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP),
590 /* OCTET STRING wrapper */
591 ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP),
592 /* SEQUENCE wrapper */
593 ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP),
594 /* SET wrapper */
595 ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP),
596 /* BIT STRING wrapper */
597 ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP),
598 ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT),
599 ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT),
600 };
601
602 if (len == -1)
603 len = strlen(tagstr);
604
605 tntmp = tnst;
606 for (i = 0; i < sizeof(tnst) / sizeof(struct tag_name_st); i++, tntmp++)
607 {
608 if ((len == tntmp->len) && !strncmp(tntmp->strnam, tagstr, len))
609 return tntmp->tag;
610 }
611
612 return -1;
613 }
614
615 static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype)
616 {
617 ASN1_TYPE *atmp = NULL;
618
619 CONF_VALUE vtmp;
620
621 unsigned char *rdata;
622 long rdlen;
623
624 int no_unused = 1;
625
626 if (!(atmp = ASN1_TYPE_new()))
627 {
628 ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
629 return NULL;
630 }
631
632 if (!str)
633 str = "";
634
635 switch(utype)
636 {
637
638 case V_ASN1_NULL:
639 if (str && *str)
640 {
641 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_NULL_VALUE);
642 goto bad_form;
643 }
644 break;
645
646 case V_ASN1_BOOLEAN:
647 if (format != ASN1_GEN_FORMAT_ASCII)
648 {
649 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_NOT_ASCII_FORMAT);
650 goto bad_form;
651 }
652 vtmp.name = NULL;
653 vtmp.section = NULL;
654 vtmp.value = (char *)str;
655 if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean))
656 {
657 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BOOLEAN);
658 goto bad_str;
659 }
660 break;
661
662 case V_ASN1_INTEGER:
663 case V_ASN1_ENUMERATED:
664 if (format != ASN1_GEN_FORMAT_ASCII)
665 {
666 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_INTEGER_NOT_ASCII_FORMAT);
667 goto bad_form;
668 }
669 if (!(atmp->value.integer = s2i_ASN1_INTEGER(NULL, (char *)str)))
670 {
671 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_INTEGER);
672 goto bad_str;
673 }
674 break;
675
676 case V_ASN1_OBJECT:
677 if (format != ASN1_GEN_FORMAT_ASCII)
678 {
679 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_OBJECT_NOT_ASCII_FORMAT);
680 goto bad_form;
681 }
682 if (!(atmp->value.object = OBJ_txt2obj(str, 0)))
683 {
684 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_OBJECT);
685 goto bad_str;
686 }
687 break;
688
689 case V_ASN1_UTCTIME:
690 case V_ASN1_GENERALIZEDTIME:
691 if (format != ASN1_GEN_FORMAT_ASCII)
692 {
693 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_TIME_NOT_ASCII_FORMAT);
694 goto bad_form;
695 }
696 if (!(atmp->value.asn1_string = ASN1_STRING_new()))
697 {
698 ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
699 goto bad_str;
700 }
701 if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1))
702 {
703 ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
704 goto bad_str;
705 }
706 atmp->value.asn1_string->type = utype;
707 if (!ASN1_TIME_check(atmp->value.asn1_string))
708 {
709 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_TIME_VALUE);
710 goto bad_str;
711 }
712
713 break;
714
715 case V_ASN1_BMPSTRING:
716 case V_ASN1_PRINTABLESTRING:
717 case V_ASN1_IA5STRING:
718 case V_ASN1_T61STRING:
719 case V_ASN1_UTF8STRING:
720 case V_ASN1_VISIBLESTRING:
721 case V_ASN1_UNIVERSALSTRING:
722 case V_ASN1_GENERALSTRING:
723 case V_ASN1_NUMERICSTRING:
724
725 if (format == ASN1_GEN_FORMAT_ASCII)
726 format = MBSTRING_ASC;
727 else if (format == ASN1_GEN_FORMAT_UTF8)
728 format = MBSTRING_UTF8;
729 else
730 {
731 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_FORMAT);
732 goto bad_form;
733 }
734
735
736 if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str,
737 -1, format, ASN1_tag2bit(utype)) <= 0)
738 {
739 ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
740 goto bad_str;
741 }
742
743
744 break;
745
746 case V_ASN1_BIT_STRING:
747
748 case V_ASN1_OCTET_STRING:
749
750 if (!(atmp->value.asn1_string = ASN1_STRING_new()))
751 {
752 ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
753 goto bad_form;
754 }
755
756 if (format == ASN1_GEN_FORMAT_HEX)
757 {
758
759 if (!(rdata = string_to_hex((char *)str, &rdlen)))
760 {
761 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_HEX);
762 goto bad_str;
763 }
764
765 atmp->value.asn1_string->data = rdata;
766 atmp->value.asn1_string->length = rdlen;
767 atmp->value.asn1_string->type = utype;
768
769 }
770 else if (format == ASN1_GEN_FORMAT_ASCII)
771 ASN1_STRING_set(atmp->value.asn1_string, str, -1);
772 else if ((format == ASN1_GEN_FORMAT_BITLIST) && (utype == V_ASN1_BIT_STRING))
773 {
774 if (!CONF_parse_list(str, ',', 1, bitstr_cb, atmp->value.bit_string))
775 {
776 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_LIST_ERROR);
777 goto bad_str;
778 }
779 no_unused = 0;
780
781 }
782 else
783 {
784 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BITSTRING_FORMAT);
785 goto bad_form;
786 }
787
788 if ((utype == V_ASN1_BIT_STRING) && no_unused)
789 {
790 atmp->value.asn1_string->flags
791 &= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
792 atmp->value.asn1_string->flags
793 |= ASN1_STRING_FLAG_BITS_LEFT;
794 }
795
796
797 break;
798
799 default:
800 ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_UNSUPPORTED_TYPE);
801 goto bad_str;
802 break;
803 }
804
805
806 atmp->type = utype;
807 return atmp;
808
809
810 bad_str:
811 ERR_add_error_data(2, "string=", str);
812 bad_form:
813
814 ASN1_TYPE_free(atmp);
815 return NULL;
816
817 }
818
819 static int bitstr_cb(const char *elem, int len, void *bitstr)
820 {
821 long bitnum;
822 char *eptr;
823 if (!elem)
824 return 0;
825 bitnum = strtoul(elem, &eptr, 10);
826 if (eptr && *eptr && (eptr != elem + len))
827 return 0;
828 if (bitnum < 0)
829 {
830 ASN1err(ASN1_F_BITSTR_CB, ASN1_R_INVALID_NUMBER);
831 return 0;
832 }
833 if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1))
834 {
835 ASN1err(ASN1_F_BITSTR_CB, ERR_R_MALLOC_FAILURE);
836 return 0;
837 }
838 return 1;
839 }
840
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