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 |
|
|
} |