GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/crypto/../../libssl/src/crypto/asn1/asn1_gen.c Lines: 0 306 0.0 %
Date: 2016-12-06 Branches: 0 209 0.0 %

Line Branch Exec Source
1
/* $OpenBSD: asn1_gen.c,v 1.15 2015/12/12 21:03:52 beck Exp $ */
2
/* Written by Dr Stephen N Henson (steve@openssl.org) 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 <string.h>
60
61
#include <openssl/asn1.h>
62
#include <openssl/err.h>
63
#include <openssl/x509v3.h>
64
65
#define ASN1_GEN_FLAG		0x10000
66
#define ASN1_GEN_FLAG_IMP	(ASN1_GEN_FLAG|1)
67
#define ASN1_GEN_FLAG_EXP	(ASN1_GEN_FLAG|2)
68
#define ASN1_GEN_FLAG_TAG	(ASN1_GEN_FLAG|3)
69
#define ASN1_GEN_FLAG_BITWRAP	(ASN1_GEN_FLAG|4)
70
#define ASN1_GEN_FLAG_OCTWRAP	(ASN1_GEN_FLAG|5)
71
#define ASN1_GEN_FLAG_SEQWRAP	(ASN1_GEN_FLAG|6)
72
#define ASN1_GEN_FLAG_SETWRAP	(ASN1_GEN_FLAG|7)
73
#define ASN1_GEN_FLAG_FORMAT	(ASN1_GEN_FLAG|8)
74
75
#define ASN1_GEN_STR(str,val){str, sizeof(str) - 1, val}
76
77
#define ASN1_FLAG_EXP_MAX	20
78
79
/* Input formats */
80
81
/* ASCII: default */
82
#define ASN1_GEN_FORMAT_ASCII	1
83
/* UTF8 */
84
#define ASN1_GEN_FORMAT_UTF8	2
85
/* Hex */
86
#define ASN1_GEN_FORMAT_HEX	3
87
/* List of bits */
88
#define ASN1_GEN_FORMAT_BITLIST	4
89
90
struct tag_name_st {
91
	const char *strnam;
92
	int len;
93
	int tag;
94
};
95
96
typedef struct {
97
	int exp_tag;
98
	int exp_class;
99
	int exp_constructed;
100
	int exp_pad;
101
	long exp_len;
102
} tag_exp_type;
103
104
typedef struct {
105
	int imp_tag;
106
	int imp_class;
107
	int utype;
108
	int format;
109
	const char *str;
110
	tag_exp_type exp_list[ASN1_FLAG_EXP_MAX];
111
	int exp_count;
112
} tag_exp_arg;
113
114
static int bitstr_cb(const char *elem, int len, void *bitstr);
115
static int asn1_cb(const char *elem, int len, void *bitstr);
116
static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class,
117
    int exp_constructed, int exp_pad, int imp_ok);
118
static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass);
119
static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf);
120
static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype);
121
static int asn1_str2tag(const char *tagstr, int len);
122
123
ASN1_TYPE *
124
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 *
136
ASN1_generate_v3(char *str, X509V3_CTX *cnf)
137
{
138
	ASN1_TYPE *ret;
139
	tag_exp_arg asn1_tags;
140
	tag_exp_type *etmp;
141
142
	int i, len;
143
144
	unsigned char *orig_der = NULL, *new_der = NULL;
145
	const unsigned char *cpy_start;
146
	unsigned char *p;
147
	const unsigned char *cp;
148
	int cpy_len;
149
	long hdr_len = 0;
150
	int hdr_constructed = 0, hdr_tag, hdr_class;
151
	int r;
152
153
	asn1_tags.imp_tag = -1;
154
	asn1_tags.imp_class = -1;
155
	asn1_tags.format = ASN1_GEN_FORMAT_ASCII;
156
	asn1_tags.exp_count = 0;
157
	if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0)
158
		return NULL;
159
160
	if ((asn1_tags.utype == V_ASN1_SEQUENCE) ||
161
	    (asn1_tags.utype == V_ASN1_SET)) {
162
		if (!cnf) {
163
			ASN1err(ASN1_F_ASN1_GENERATE_V3,
164
			    ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG);
165
			return NULL;
166
		}
167
		ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf);
168
	} else
169
		ret = asn1_str2type(asn1_tags.str, asn1_tags.format,
170
		    asn1_tags.utype);
171
172
	if (!ret)
173
		return NULL;
174
175
	/* If no tagging return base type */
176
	if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0))
177
		return ret;
178
179
	/* Generate the encoding */
180
	cpy_len = i2d_ASN1_TYPE(ret, &orig_der);
181
	ASN1_TYPE_free(ret);
182
	ret = NULL;
183
	/* Set point to start copying for modified encoding */
184
	cpy_start = orig_der;
185
186
	/* Do we need IMPLICIT tagging? */
187
	if (asn1_tags.imp_tag != -1) {
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,
191
		    &hdr_class, cpy_len);
192
		if (r & 0x80)
193
			goto err;
194
		/* Update copy length */
195
		cpy_len -= cpy_start - orig_der;
196
		/* For IMPLICIT tagging the length should match the
197
		 * original length and constructed flag should be
198
		 * consistent.
199
		 */
200
		if (r & 0x1) {
201
			/* Indefinite length constructed */
202
			hdr_constructed = 2;
203
			hdr_len = 0;
204
		} else
205
			/* Just retain constructed flag */
206
			hdr_constructed = r & V_ASN1_CONSTRUCTED;
207
		/* Work out new length with IMPLICIT tag: ignore constructed
208
		 * because it will mess up if indefinite length
209
		 */
210
		len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag);
211
	} else
212
		len = cpy_len;
213
214
	/* Work out length in any EXPLICIT, starting from end */
215
216
	for (i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1;
217
	    i < asn1_tags.exp_count; i++, etmp--) {
218
		/* Content length: number of content octets + any padding */
219
		len += etmp->exp_pad;
220
		etmp->exp_len = len;
221
		/* Total object length: length including new header */
222
		len = ASN1_object_size(0, len, etmp->exp_tag);
223
	}
224
225
	/* Allocate buffer for new encoding */
226
227
	new_der = malloc(len);
228
	if (!new_der)
229
		goto err;
230
231
	/* Generate tagged encoding */
232
	p = new_der;
233
234
	/* Output explicit tags first */
235
	for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count;
236
	    i++, etmp++) {
237
		ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len,
238
		    etmp->exp_tag, etmp->exp_class);
239
		if (etmp->exp_pad)
240
			*p++ = 0;
241
	}
242
243
	/* If IMPLICIT, output tag */
244
245
	if (asn1_tags.imp_tag != -1) {
246
		if (asn1_tags.imp_class == V_ASN1_UNIVERSAL &&
247
		    (asn1_tags.imp_tag == V_ASN1_SEQUENCE ||
248
		    asn1_tags.imp_tag == V_ASN1_SET))
249
			hdr_constructed = V_ASN1_CONSTRUCTED;
250
		ASN1_put_object(&p, hdr_constructed, hdr_len,
251
		    asn1_tags.imp_tag, asn1_tags.imp_class);
252
	}
253
254
	/* Copy across original encoding */
255
	memcpy(p, cpy_start, cpy_len);
256
257
	cp = new_der;
258
259
	/* Obtain new ASN1_TYPE structure */
260
	ret = d2i_ASN1_TYPE(NULL, &cp, len);
261
262
err:
263
	free(orig_der);
264
	free(new_der);
265
266
	return ret;
267
}
268
269
static int
270
asn1_cb(const char *elem, int len, void *bitstr)
271
{
272
	tag_exp_arg *arg = bitstr;
273
	int i;
274
	int utype;
275
	int vlen = 0;
276
	const char *p, *vstart = NULL;
277
278
	int tmp_tag, tmp_class;
279
280
	for (i = 0, p = elem; i < len; p++, i++) {
281
		/* Look for the ':' in name value pairs */
282
		if (*p == ':') {
283
			vstart = p + 1;
284
			vlen = len - (vstart - elem);
285
			len = p - elem;
286
			break;
287
		}
288
	}
289
290
	utype = asn1_str2tag(elem, len);
291
292
	if (utype == -1) {
293
		ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKNOWN_TAG);
294
		ERR_asprintf_error_data("tag=%s", elem);
295
		return -1;
296
	}
297
298
	/* If this is not a modifier mark end of string and exit */
299
	if (!(utype & ASN1_GEN_FLAG)) {
300
		arg->utype = utype;
301
		arg->str = vstart;
302
		/* If no value and not end of string, error */
303
		if (!vstart && elem[len]) {
304
			ASN1err(ASN1_F_ASN1_CB, ASN1_R_MISSING_VALUE);
305
			return -1;
306
		}
307
		return 0;
308
	}
309
310
	switch (utype) {
311
312
	case ASN1_GEN_FLAG_IMP:
313
		/* Check for illegal multiple IMPLICIT tagging */
314
		if (arg->imp_tag != -1) {
315
			ASN1err(ASN1_F_ASN1_CB, ASN1_R_ILLEGAL_NESTED_TAGGING);
316
			return -1;
317
		}
318
		if (!parse_tagging(vstart, vlen, &arg->imp_tag,
319
		    &arg->imp_class))
320
			return -1;
321
		break;
322
323
	case ASN1_GEN_FLAG_EXP:
324
		if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class))
325
			return -1;
326
		if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0))
327
			return -1;
328
		break;
329
330
	case ASN1_GEN_FLAG_SEQWRAP:
331
		if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1))
332
			return -1;
333
		break;
334
335
	case ASN1_GEN_FLAG_SETWRAP:
336
		if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1))
337
			return -1;
338
		break;
339
340
	case ASN1_GEN_FLAG_BITWRAP:
341
		if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1))
342
			return -1;
343
		break;
344
345
	case ASN1_GEN_FLAG_OCTWRAP:
346
		if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1))
347
			return -1;
348
		break;
349
350
	case ASN1_GEN_FLAG_FORMAT:
351
		if (vstart == NULL) {
352
			ASN1err(ASN1_F_ASN1_CB, ASN1_R_ILLEGAL_FORMAT);
353
			return -1;
354
		}
355
		if (!strncmp(vstart, "ASCII", 5))
356
			arg->format = ASN1_GEN_FORMAT_ASCII;
357
		else if (!strncmp(vstart, "UTF8", 4))
358
			arg->format = ASN1_GEN_FORMAT_UTF8;
359
		else if (!strncmp(vstart, "HEX", 3))
360
			arg->format = ASN1_GEN_FORMAT_HEX;
361
		else if (!strncmp(vstart, "BITLIST", 7))
362
			arg->format = ASN1_GEN_FORMAT_BITLIST;
363
		else {
364
			ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKOWN_FORMAT);
365
			return -1;
366
		}
367
		break;
368
369
	}
370
371
	return 1;
372
}
373
374
static int
375
parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass)
376
{
377
	long tag_num;
378
	char *eptr;
379
380
	if (!vstart)
381
		return 0;
382
	tag_num = strtoul(vstart, &eptr, 10);
383
	/* Check we haven't gone past max length: should be impossible */
384
	if (eptr && *eptr && (eptr > vstart + vlen))
385
		return 0;
386
	if (tag_num < 0) {
387
		ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_NUMBER);
388
		return 0;
389
	}
390
	*ptag = tag_num;
391
	/* If we have non numeric characters, parse them */
392
	if (eptr)
393
		vlen -= eptr - vstart;
394
	else
395
		vlen = 0;
396
	if (vlen) {
397
		switch (*eptr) {
398
399
		case 'U':
400
			*pclass = V_ASN1_UNIVERSAL;
401
			break;
402
403
		case 'A':
404
			*pclass = V_ASN1_APPLICATION;
405
			break;
406
407
		case 'P':
408
			*pclass = V_ASN1_PRIVATE;
409
			break;
410
411
		case 'C':
412
			*pclass = V_ASN1_CONTEXT_SPECIFIC;
413
			break;
414
415
		default:
416
			ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_MODIFIER);
417
			ERR_asprintf_error_data("Char=%c", *eptr);
418
			return 0;
419
			break;
420
421
		}
422
	} else
423
		*pclass = V_ASN1_CONTEXT_SPECIFIC;
424
425
	return 1;
426
427
}
428
429
/* Handle multiple types: SET and SEQUENCE */
430
431
static ASN1_TYPE *
432
asn1_multi(int utype, const char *section, X509V3_CTX *cnf)
433
{
434
	ASN1_TYPE *ret = NULL;
435
	STACK_OF(ASN1_TYPE) *sk = NULL;
436
	STACK_OF(CONF_VALUE) *sect = NULL;
437
	unsigned char *der = NULL;
438
	int derlen;
439
	int i;
440
	sk = sk_ASN1_TYPE_new_null();
441
	if (!sk)
442
		goto bad;
443
	if (section) {
444
		if (!cnf)
445
			goto bad;
446
		sect = X509V3_get_section(cnf, (char *)section);
447
		if (!sect)
448
			goto bad;
449
		for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
450
			ASN1_TYPE *typ = ASN1_generate_v3(
451
			    sk_CONF_VALUE_value(sect, i)->value, cnf);
452
			if (!typ)
453
				goto bad;
454
			if (!sk_ASN1_TYPE_push(sk, typ))
455
				goto bad;
456
		}
457
	}
458
459
	/* Now we has a STACK of the components, convert to the correct form */
460
461
	if (utype == V_ASN1_SET)
462
		derlen = i2d_ASN1_SET_ANY(sk, &der);
463
	else
464
		derlen = i2d_ASN1_SEQUENCE_ANY(sk, &der);
465
466
	if (derlen < 0)
467
		goto bad;
468
469
	if (!(ret = ASN1_TYPE_new()))
470
		goto bad;
471
472
	if (!(ret->value.asn1_string = ASN1_STRING_type_new(utype)))
473
		goto bad;
474
475
	ret->type = utype;
476
477
	ret->value.asn1_string->data = der;
478
	ret->value.asn1_string->length = derlen;
479
480
	der = NULL;
481
482
bad:
483
	free(der);
484
	if (sk)
485
		sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free);
486
	if (sect)
487
		X509V3_section_free(cnf, sect);
488
489
	return ret;
490
}
491
492
static int
493
append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, int exp_constructed,
494
    int exp_pad, int imp_ok)
495
{
496
	tag_exp_type *exp_tmp;
497
498
	/* Can only have IMPLICIT if permitted */
499
	if ((arg->imp_tag != -1) && !imp_ok) {
500
		ASN1err(ASN1_F_APPEND_EXP, ASN1_R_ILLEGAL_IMPLICIT_TAG);
501
		return 0;
502
	}
503
504
	if (arg->exp_count == ASN1_FLAG_EXP_MAX) {
505
		ASN1err(ASN1_F_APPEND_EXP, ASN1_R_DEPTH_EXCEEDED);
506
		return 0;
507
	}
508
509
	exp_tmp = &arg->exp_list[arg->exp_count++];
510
511
	/* If IMPLICIT set tag to implicit value then
512
	 * reset implicit tag since it has been used.
513
	 */
514
	if (arg->imp_tag != -1) {
515
		exp_tmp->exp_tag = arg->imp_tag;
516
		exp_tmp->exp_class = arg->imp_class;
517
		arg->imp_tag = -1;
518
		arg->imp_class = -1;
519
	} else {
520
		exp_tmp->exp_tag = exp_tag;
521
		exp_tmp->exp_class = exp_class;
522
	}
523
	exp_tmp->exp_constructed = exp_constructed;
524
	exp_tmp->exp_pad = exp_pad;
525
526
	return 1;
527
}
528
529
static int
530
asn1_str2tag(const char *tagstr, int len)
531
{
532
	unsigned int i;
533
	static const struct tag_name_st *tntmp, tnst [] = {
534
		ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN),
535
		ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN),
536
		ASN1_GEN_STR("NULL", V_ASN1_NULL),
537
		ASN1_GEN_STR("INT", V_ASN1_INTEGER),
538
		ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER),
539
		ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED),
540
		ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED),
541
		ASN1_GEN_STR("OID", V_ASN1_OBJECT),
542
		ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT),
543
		ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME),
544
		ASN1_GEN_STR("UTC", V_ASN1_UTCTIME),
545
		ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME),
546
		ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME),
547
		ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING),
548
		ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING),
549
		ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING),
550
		ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING),
551
		ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING),
552
		ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING),
553
		ASN1_GEN_STR("IA5", V_ASN1_IA5STRING),
554
		ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING),
555
		ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING),
556
		ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING),
557
		ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING),
558
		ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING),
559
		ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING),
560
		ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING),
561
		ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING),
562
		ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING),
563
		ASN1_GEN_STR("T61", V_ASN1_T61STRING),
564
		ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING),
565
		ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING),
566
		ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING),
567
		ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING),
568
		ASN1_GEN_STR("NUMERIC", V_ASN1_NUMERICSTRING),
569
		ASN1_GEN_STR("NUMERICSTRING", V_ASN1_NUMERICSTRING),
570
571
		/* Special cases */
572
		ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE),
573
		ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE),
574
		ASN1_GEN_STR("SET", V_ASN1_SET),
575
		/* type modifiers */
576
		/* Explicit tag */
577
		ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP),
578
		ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP),
579
		/* Implicit tag */
580
		ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP),
581
		ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP),
582
		/* OCTET STRING wrapper */
583
		ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP),
584
		/* SEQUENCE wrapper */
585
		ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP),
586
		/* SET wrapper */
587
		ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP),
588
		/* BIT STRING wrapper */
589
		ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP),
590
		ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT),
591
		ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT),
592
	};
593
594
	if (len == -1)
595
		len = strlen(tagstr);
596
597
	tntmp = tnst;
598
	for (i = 0; i < sizeof(tnst) / sizeof(struct tag_name_st);
599
	    i++, tntmp++) {
600
		if ((len == tntmp->len) && !strncmp(tntmp->strnam, tagstr, len))
601
			return tntmp->tag;
602
	}
603
604
	return -1;
605
}
606
607
static ASN1_TYPE *
608
asn1_str2type(const char *str, int format, int utype)
609
{
610
	ASN1_TYPE *atmp = NULL;
611
	CONF_VALUE vtmp;
612
	unsigned char *rdata;
613
	long rdlen;
614
	int no_unused = 1;
615
616
	if (!(atmp = ASN1_TYPE_new())) {
617
		ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
618
		return NULL;
619
	}
620
621
	if (!str)
622
		str = "";
623
624
	switch (utype) {
625
626
	case V_ASN1_NULL:
627
		if (str && *str) {
628
			ASN1err(ASN1_F_ASN1_STR2TYPE,
629
			    ASN1_R_ILLEGAL_NULL_VALUE);
630
			goto bad_form;
631
		}
632
		break;
633
634
	case V_ASN1_BOOLEAN:
635
		if (format != ASN1_GEN_FORMAT_ASCII) {
636
			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_NOT_ASCII_FORMAT);
637
			goto bad_form;
638
		}
639
		vtmp.name = NULL;
640
		vtmp.section = NULL;
641
		vtmp.value = (char *)str;
642
		if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean)) {
643
			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BOOLEAN);
644
			goto bad_str;
645
		}
646
		break;
647
648
	case V_ASN1_INTEGER:
649
	case V_ASN1_ENUMERATED:
650
		if (format != ASN1_GEN_FORMAT_ASCII) {
651
			ASN1err(ASN1_F_ASN1_STR2TYPE,
652
			    ASN1_R_INTEGER_NOT_ASCII_FORMAT);
653
			goto bad_form;
654
		}
655
		if (!(atmp->value.integer =
656
		    s2i_ASN1_INTEGER(NULL, (char *)str))) {
657
			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_INTEGER);
658
			goto bad_str;
659
		}
660
		break;
661
662
	case V_ASN1_OBJECT:
663
		if (format != ASN1_GEN_FORMAT_ASCII) {
664
			ASN1err(ASN1_F_ASN1_STR2TYPE,
665
			    ASN1_R_OBJECT_NOT_ASCII_FORMAT);
666
			goto bad_form;
667
		}
668
		if (!(atmp->value.object = OBJ_txt2obj(str, 0))) {
669
			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_OBJECT);
670
			goto bad_str;
671
		}
672
		break;
673
674
	case V_ASN1_UTCTIME:
675
	case V_ASN1_GENERALIZEDTIME:
676
		if (format != ASN1_GEN_FORMAT_ASCII) {
677
			ASN1err(ASN1_F_ASN1_STR2TYPE,
678
			    ASN1_R_TIME_NOT_ASCII_FORMAT);
679
			goto bad_form;
680
		}
681
		if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
682
			ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
683
			goto bad_str;
684
		}
685
		if (!ASN1_STRING_set(atmp->value.asn1_string, str, -1)) {
686
			ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
687
			goto bad_str;
688
		}
689
		atmp->value.asn1_string->type = utype;
690
		if (!ASN1_TIME_check(atmp->value.asn1_string)) {
691
			ASN1err(ASN1_F_ASN1_STR2TYPE,
692
			    ASN1_R_ILLEGAL_TIME_VALUE);
693
			goto bad_str;
694
		}
695
		break;
696
697
	case V_ASN1_BMPSTRING:
698
	case V_ASN1_PRINTABLESTRING:
699
	case V_ASN1_IA5STRING:
700
	case V_ASN1_T61STRING:
701
	case V_ASN1_UTF8STRING:
702
	case V_ASN1_VISIBLESTRING:
703
	case V_ASN1_UNIVERSALSTRING:
704
	case V_ASN1_GENERALSTRING:
705
	case V_ASN1_NUMERICSTRING:
706
707
		if (format == ASN1_GEN_FORMAT_ASCII)
708
			format = MBSTRING_ASC;
709
		else if (format == ASN1_GEN_FORMAT_UTF8)
710
			format = MBSTRING_UTF8;
711
		else {
712
			ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_FORMAT);
713
			goto bad_form;
714
		}
715
716
		if (ASN1_mbstring_copy(&atmp->value.asn1_string,
717
		    (unsigned char *)str, -1, format,
718
		    ASN1_tag2bit(utype)) <= 0) {
719
			ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
720
			goto bad_str;
721
		}
722
		break;
723
724
	case V_ASN1_BIT_STRING:
725
	case V_ASN1_OCTET_STRING:
726
		if (!(atmp->value.asn1_string = ASN1_STRING_new())) {
727
			ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE);
728
			goto bad_form;
729
		}
730
731
		if (format == ASN1_GEN_FORMAT_HEX) {
732
733
			if (!(rdata = string_to_hex((char *)str, &rdlen))) {
734
				ASN1err(ASN1_F_ASN1_STR2TYPE,
735
				    ASN1_R_ILLEGAL_HEX);
736
				goto bad_str;
737
			}
738
739
			atmp->value.asn1_string->data = rdata;
740
			atmp->value.asn1_string->length = rdlen;
741
			atmp->value.asn1_string->type = utype;
742
743
		} else if (format == ASN1_GEN_FORMAT_ASCII) {
744
			if (ASN1_STRING_set(atmp->value.asn1_string, str,
745
			    -1) == 0) {
746
				ASN1err(ASN1_F_ASN1_STR2TYPE,
747
				    ERR_R_MALLOC_FAILURE);
748
				goto bad_str;
749
			}
750
		} else if ((format == ASN1_GEN_FORMAT_BITLIST) &&
751
		    (utype == V_ASN1_BIT_STRING)) {
752
			if (!CONF_parse_list(str, ',', 1, bitstr_cb,
753
			    atmp->value.bit_string)) {
754
				ASN1err(ASN1_F_ASN1_STR2TYPE,
755
				    ASN1_R_LIST_ERROR);
756
				goto bad_str;
757
			}
758
			no_unused = 0;
759
760
		} else {
761
			ASN1err(ASN1_F_ASN1_STR2TYPE,
762
			    ASN1_R_ILLEGAL_BITSTRING_FORMAT);
763
			goto bad_form;
764
		}
765
766
		if ((utype == V_ASN1_BIT_STRING) && no_unused) {
767
			atmp->value.asn1_string->flags &=
768
			    ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
769
			atmp->value.asn1_string->flags |=
770
			    ASN1_STRING_FLAG_BITS_LEFT;
771
		}
772
773
		break;
774
775
	default:
776
		ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_UNSUPPORTED_TYPE);
777
		goto bad_str;
778
		break;
779
	}
780
781
	atmp->type = utype;
782
	return atmp;
783
784
bad_str:
785
	ERR_asprintf_error_data("string=%s", str);
786
bad_form:
787
	ASN1_TYPE_free(atmp);
788
	return NULL;
789
}
790
791
static int
792
bitstr_cb(const char *elem, int len, void *bitstr)
793
{
794
	long bitnum;
795
	char *eptr;
796
797
	if (!elem)
798
		return 0;
799
	bitnum = strtoul(elem, &eptr, 10);
800
	if (eptr && *eptr && (eptr != elem + len))
801
		return 0;
802
	if (bitnum < 0) {
803
		ASN1err(ASN1_F_BITSTR_CB, ASN1_R_INVALID_NUMBER);
804
		return 0;
805
	}
806
	if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1)) {
807
		ASN1err(ASN1_F_BITSTR_CB, ERR_R_MALLOC_FAILURE);
808
		return 0;
809
	}
810
	return 1;
811
}