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Commit | Line | Data |
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9ea1b878 | 1 | /* asn1_gen.c */ |
0f113f3e MC |
2 | /* |
3 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project | |
4 | * 2002. | |
9ea1b878 DSH |
5 | */ |
6 | /* ==================================================================== | |
7 | * Copyright (c) 2002 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 14 | * notice, this list of conditions and the following disclaimer. |
9ea1b878 DSH |
15 | * |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in | |
18 | * the documentation and/or other materials provided with the | |
19 | * distribution. | |
20 | * | |
21 | * 3. All advertising materials mentioning features or use of this | |
22 | * software must display the following acknowledgment: | |
23 | * "This product includes software developed by the OpenSSL Project | |
24 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
25 | * | |
26 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
27 | * endorse or promote products derived from this software without | |
28 | * prior written permission. For written permission, please contact | |
29 | * licensing@OpenSSL.org. | |
30 | * | |
31 | * 5. Products derived from this software may not be called "OpenSSL" | |
32 | * nor may "OpenSSL" appear in their names without prior written | |
33 | * permission of the OpenSSL Project. | |
34 | * | |
35 | * 6. Redistributions of any form whatsoever must retain the following | |
36 | * acknowledgment: | |
37 | * "This product includes software developed by the OpenSSL Project | |
38 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
39 | * | |
40 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
41 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
43 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
44 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
45 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
46 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
47 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
49 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
50 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
51 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
52 | * ==================================================================== | |
53 | * | |
54 | * This product includes cryptographic software written by Eric Young | |
55 | * (eay@cryptsoft.com). This product includes software written by Tim | |
56 | * Hudson (tjh@cryptsoft.com). | |
57 | * | |
58 | */ | |
59 | ||
b39fc560 | 60 | #include "internal/cryptlib.h" |
9ea1b878 DSH |
61 | #include <openssl/asn1.h> |
62 | #include <openssl/x509v3.h> | |
63 | ||
0f113f3e MC |
64 | #define ASN1_GEN_FLAG 0x10000 |
65 | #define ASN1_GEN_FLAG_IMP (ASN1_GEN_FLAG|1) | |
66 | #define ASN1_GEN_FLAG_EXP (ASN1_GEN_FLAG|2) | |
67 | #define ASN1_GEN_FLAG_TAG (ASN1_GEN_FLAG|3) | |
68 | #define ASN1_GEN_FLAG_BITWRAP (ASN1_GEN_FLAG|4) | |
69 | #define ASN1_GEN_FLAG_OCTWRAP (ASN1_GEN_FLAG|5) | |
70 | #define ASN1_GEN_FLAG_SEQWRAP (ASN1_GEN_FLAG|6) | |
71 | #define ASN1_GEN_FLAG_SETWRAP (ASN1_GEN_FLAG|7) | |
72 | #define ASN1_GEN_FLAG_FORMAT (ASN1_GEN_FLAG|8) | |
9ea1b878 | 73 | |
0f113f3e | 74 | #define ASN1_GEN_STR(str,val) {str, sizeof(str) - 1, val} |
9ea1b878 | 75 | |
0f113f3e | 76 | #define ASN1_FLAG_EXP_MAX 20 |
c4137b5e DSH |
77 | /* Maximum number of nested sequences */ |
78 | #define ASN1_GEN_SEQ_MAX_DEPTH 50 | |
9ea1b878 DSH |
79 | |
80 | /* Input formats */ | |
81 | ||
82 | /* ASCII: default */ | |
0f113f3e | 83 | #define ASN1_GEN_FORMAT_ASCII 1 |
9ea1b878 | 84 | /* UTF8 */ |
0f113f3e | 85 | #define ASN1_GEN_FORMAT_UTF8 2 |
9ea1b878 | 86 | /* Hex */ |
0f113f3e | 87 | #define ASN1_GEN_FORMAT_HEX 3 |
9ea1b878 | 88 | /* List of bits */ |
0f113f3e MC |
89 | #define ASN1_GEN_FORMAT_BITLIST 4 |
90 | ||
91 | struct tag_name_st { | |
92 | const char *strnam; | |
93 | int len; | |
94 | int tag; | |
95 | }; | |
96 | ||
97 | typedef struct { | |
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 | int imp_tag; | |
107 | int imp_class; | |
108 | int utype; | |
109 | int format; | |
110 | const char *str; | |
111 | tag_exp_type exp_list[ASN1_FLAG_EXP_MAX]; | |
112 | int exp_count; | |
113 | } tag_exp_arg; | |
9ea1b878 | 114 | |
c4137b5e DSH |
115 | static ASN1_TYPE *generate_v3(char *str, X509V3_CTX *cnf, int depth, |
116 | int *perr); | |
9ea1b878 DSH |
117 | static int bitstr_cb(const char *elem, int len, void *bitstr); |
118 | static int asn1_cb(const char *elem, int len, void *bitstr); | |
0f113f3e MC |
119 | static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, |
120 | int exp_constructed, int exp_pad, int imp_ok); | |
121 | static int parse_tagging(const char *vstart, int vlen, int *ptag, | |
122 | int *pclass); | |
c4137b5e DSH |
123 | static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf, |
124 | int depth, int *perr); | |
9ea1b878 DSH |
125 | static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype); |
126 | static int asn1_str2tag(const char *tagstr, int len); | |
127 | ||
128 | ASN1_TYPE *ASN1_generate_nconf(char *str, CONF *nconf) | |
0f113f3e MC |
129 | { |
130 | X509V3_CTX cnf; | |
9ea1b878 | 131 | |
0f113f3e MC |
132 | if (!nconf) |
133 | return ASN1_generate_v3(str, NULL); | |
9ea1b878 | 134 | |
0f113f3e MC |
135 | X509V3_set_nconf(&cnf, nconf); |
136 | return ASN1_generate_v3(str, &cnf); | |
137 | } | |
9ea1b878 DSH |
138 | |
139 | ASN1_TYPE *ASN1_generate_v3(char *str, X509V3_CTX *cnf) | |
c4137b5e DSH |
140 | { |
141 | int err = 0; | |
142 | ASN1_TYPE *ret = generate_v3(str, cnf, 0, &err); | |
143 | if (err) | |
144 | ASN1err(ASN1_F_ASN1_GENERATE_V3, err); | |
145 | return ret; | |
146 | } | |
147 | ||
148 | static ASN1_TYPE *generate_v3(char *str, X509V3_CTX *cnf, int depth, | |
149 | int *perr) | |
0f113f3e MC |
150 | { |
151 | ASN1_TYPE *ret; | |
152 | tag_exp_arg asn1_tags; | |
153 | tag_exp_type *etmp; | |
154 | ||
155 | int i, len; | |
156 | ||
157 | unsigned char *orig_der = NULL, *new_der = NULL; | |
158 | const unsigned char *cpy_start; | |
159 | unsigned char *p; | |
160 | const unsigned char *cp; | |
161 | int cpy_len; | |
4c9b0a03 | 162 | long hdr_len = 0; |
0f113f3e MC |
163 | int hdr_constructed = 0, hdr_tag, hdr_class; |
164 | int r; | |
165 | ||
166 | asn1_tags.imp_tag = -1; | |
167 | asn1_tags.imp_class = -1; | |
168 | asn1_tags.format = ASN1_GEN_FORMAT_ASCII; | |
169 | asn1_tags.exp_count = 0; | |
111b60be DSH |
170 | if (CONF_parse_list(str, ',', 1, asn1_cb, &asn1_tags) != 0) { |
171 | *perr = ASN1_R_UNKNOWN_TAG; | |
0f113f3e | 172 | return NULL; |
111b60be | 173 | } |
0f113f3e MC |
174 | |
175 | if ((asn1_tags.utype == V_ASN1_SEQUENCE) | |
176 | || (asn1_tags.utype == V_ASN1_SET)) { | |
177 | if (!cnf) { | |
c4137b5e DSH |
178 | *perr = ASN1_R_SEQUENCE_OR_SET_NEEDS_CONFIG; |
179 | return NULL; | |
180 | } | |
181 | if (depth >= ASN1_GEN_SEQ_MAX_DEPTH) { | |
182 | *perr = ASN1_R_ILLEGAL_NESTED_TAGGING; | |
0f113f3e MC |
183 | return NULL; |
184 | } | |
c4137b5e | 185 | ret = asn1_multi(asn1_tags.utype, asn1_tags.str, cnf, depth, perr); |
0f113f3e MC |
186 | } else |
187 | ret = asn1_str2type(asn1_tags.str, asn1_tags.format, asn1_tags.utype); | |
188 | ||
189 | if (!ret) | |
190 | return NULL; | |
191 | ||
192 | /* If no tagging return base type */ | |
193 | if ((asn1_tags.imp_tag == -1) && (asn1_tags.exp_count == 0)) | |
194 | return ret; | |
195 | ||
196 | /* Generate the encoding */ | |
197 | cpy_len = i2d_ASN1_TYPE(ret, &orig_der); | |
198 | ASN1_TYPE_free(ret); | |
199 | ret = NULL; | |
200 | /* Set point to start copying for modified encoding */ | |
201 | cpy_start = orig_der; | |
202 | ||
203 | /* Do we need IMPLICIT tagging? */ | |
204 | if (asn1_tags.imp_tag != -1) { | |
205 | /* If IMPLICIT we will replace the underlying tag */ | |
206 | /* Skip existing tag+len */ | |
207 | r = ASN1_get_object(&cpy_start, &hdr_len, &hdr_tag, &hdr_class, | |
208 | cpy_len); | |
209 | if (r & 0x80) | |
210 | goto err; | |
211 | /* Update copy length */ | |
212 | cpy_len -= cpy_start - orig_der; | |
213 | /* | |
214 | * For IMPLICIT tagging the length should match the original length | |
215 | * and constructed flag should be consistent. | |
216 | */ | |
217 | if (r & 0x1) { | |
218 | /* Indefinite length constructed */ | |
219 | hdr_constructed = 2; | |
220 | hdr_len = 0; | |
221 | } else | |
222 | /* Just retain constructed flag */ | |
223 | hdr_constructed = r & V_ASN1_CONSTRUCTED; | |
224 | /* | |
225 | * Work out new length with IMPLICIT tag: ignore constructed because | |
226 | * it will mess up if indefinite length | |
227 | */ | |
228 | len = ASN1_object_size(0, hdr_len, asn1_tags.imp_tag); | |
229 | } else | |
230 | len = cpy_len; | |
231 | ||
232 | /* Work out length in any EXPLICIT, starting from end */ | |
233 | ||
234 | for (i = 0, etmp = asn1_tags.exp_list + asn1_tags.exp_count - 1; | |
235 | i < asn1_tags.exp_count; i++, etmp--) { | |
236 | /* Content length: number of content octets + any padding */ | |
237 | len += etmp->exp_pad; | |
238 | etmp->exp_len = len; | |
239 | /* Total object length: length including new header */ | |
240 | len = ASN1_object_size(0, len, etmp->exp_tag); | |
241 | } | |
242 | ||
243 | /* Allocate buffer for new encoding */ | |
244 | ||
245 | new_der = OPENSSL_malloc(len); | |
246 | if (!new_der) | |
247 | goto err; | |
248 | ||
249 | /* Generate tagged encoding */ | |
250 | ||
251 | p = new_der; | |
252 | ||
253 | /* Output explicit tags first */ | |
254 | ||
255 | for (i = 0, etmp = asn1_tags.exp_list; i < asn1_tags.exp_count; | |
256 | i++, etmp++) { | |
257 | ASN1_put_object(&p, etmp->exp_constructed, etmp->exp_len, | |
258 | etmp->exp_tag, etmp->exp_class); | |
259 | if (etmp->exp_pad) | |
260 | *p++ = 0; | |
261 | } | |
262 | ||
263 | /* If IMPLICIT, output tag */ | |
264 | ||
265 | if (asn1_tags.imp_tag != -1) { | |
266 | if (asn1_tags.imp_class == V_ASN1_UNIVERSAL | |
267 | && (asn1_tags.imp_tag == V_ASN1_SEQUENCE | |
268 | || asn1_tags.imp_tag == V_ASN1_SET)) | |
269 | hdr_constructed = V_ASN1_CONSTRUCTED; | |
270 | ASN1_put_object(&p, hdr_constructed, hdr_len, | |
271 | asn1_tags.imp_tag, asn1_tags.imp_class); | |
272 | } | |
273 | ||
274 | /* Copy across original encoding */ | |
275 | memcpy(p, cpy_start, cpy_len); | |
276 | ||
277 | cp = new_der; | |
278 | ||
279 | /* Obtain new ASN1_TYPE structure */ | |
280 | ret = d2i_ASN1_TYPE(NULL, &cp, len); | |
281 | ||
282 | err: | |
b548a1f1 RS |
283 | OPENSSL_free(orig_der); |
284 | OPENSSL_free(new_der); | |
0f113f3e MC |
285 | |
286 | return ret; | |
287 | ||
288 | } | |
9ea1b878 DSH |
289 | |
290 | static int asn1_cb(const char *elem, int len, void *bitstr) | |
0f113f3e MC |
291 | { |
292 | tag_exp_arg *arg = bitstr; | |
293 | int i; | |
294 | int utype; | |
295 | int vlen = 0; | |
296 | const char *p, *vstart = NULL; | |
297 | ||
298 | int tmp_tag, tmp_class; | |
299 | ||
2747d73c | 300 | if (elem == NULL) |
111b60be | 301 | return -1; |
2747d73c | 302 | |
0f113f3e MC |
303 | for (i = 0, p = elem; i < len; p++, i++) { |
304 | /* Look for the ':' in name value pairs */ | |
305 | if (*p == ':') { | |
306 | vstart = p + 1; | |
307 | vlen = len - (vstart - elem); | |
308 | len = p - elem; | |
309 | break; | |
310 | } | |
311 | } | |
312 | ||
313 | utype = asn1_str2tag(elem, len); | |
314 | ||
315 | if (utype == -1) { | |
316 | ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKNOWN_TAG); | |
317 | ERR_add_error_data(2, "tag=", elem); | |
318 | return -1; | |
319 | } | |
320 | ||
321 | /* If this is not a modifier mark end of string and exit */ | |
322 | if (!(utype & ASN1_GEN_FLAG)) { | |
323 | arg->utype = utype; | |
324 | arg->str = vstart; | |
325 | /* If no value and not end of string, error */ | |
326 | if (!vstart && elem[len]) { | |
327 | ASN1err(ASN1_F_ASN1_CB, ASN1_R_MISSING_VALUE); | |
328 | return -1; | |
329 | } | |
330 | return 0; | |
331 | } | |
332 | ||
333 | switch (utype) { | |
334 | ||
335 | case ASN1_GEN_FLAG_IMP: | |
336 | /* Check for illegal multiple IMPLICIT tagging */ | |
337 | if (arg->imp_tag != -1) { | |
338 | ASN1err(ASN1_F_ASN1_CB, ASN1_R_ILLEGAL_NESTED_TAGGING); | |
339 | return -1; | |
340 | } | |
341 | if (!parse_tagging(vstart, vlen, &arg->imp_tag, &arg->imp_class)) | |
342 | return -1; | |
343 | break; | |
344 | ||
345 | case ASN1_GEN_FLAG_EXP: | |
346 | ||
347 | if (!parse_tagging(vstart, vlen, &tmp_tag, &tmp_class)) | |
348 | return -1; | |
349 | if (!append_exp(arg, tmp_tag, tmp_class, 1, 0, 0)) | |
350 | return -1; | |
351 | break; | |
352 | ||
353 | case ASN1_GEN_FLAG_SEQWRAP: | |
354 | if (!append_exp(arg, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 1, 0, 1)) | |
355 | return -1; | |
356 | break; | |
357 | ||
358 | case ASN1_GEN_FLAG_SETWRAP: | |
359 | if (!append_exp(arg, V_ASN1_SET, V_ASN1_UNIVERSAL, 1, 0, 1)) | |
360 | return -1; | |
361 | break; | |
362 | ||
363 | case ASN1_GEN_FLAG_BITWRAP: | |
364 | if (!append_exp(arg, V_ASN1_BIT_STRING, V_ASN1_UNIVERSAL, 0, 1, 1)) | |
365 | return -1; | |
366 | break; | |
367 | ||
368 | case ASN1_GEN_FLAG_OCTWRAP: | |
369 | if (!append_exp(arg, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL, 0, 0, 1)) | |
370 | return -1; | |
371 | break; | |
372 | ||
373 | case ASN1_GEN_FLAG_FORMAT: | |
c4137b5e | 374 | if (!vstart) { |
ac5a1106 MC |
375 | ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKNOWN_FORMAT); |
376 | return -1; | |
377 | } | |
86885c28 | 378 | if (strncmp(vstart, "ASCII", 5) == 0) |
0f113f3e | 379 | arg->format = ASN1_GEN_FORMAT_ASCII; |
86885c28 | 380 | else if (strncmp(vstart, "UTF8", 4) == 0) |
0f113f3e | 381 | arg->format = ASN1_GEN_FORMAT_UTF8; |
86885c28 | 382 | else if (strncmp(vstart, "HEX", 3) == 0) |
0f113f3e | 383 | arg->format = ASN1_GEN_FORMAT_HEX; |
86885c28 | 384 | else if (strncmp(vstart, "BITLIST", 7) == 0) |
0f113f3e MC |
385 | arg->format = ASN1_GEN_FORMAT_BITLIST; |
386 | else { | |
387 | ASN1err(ASN1_F_ASN1_CB, ASN1_R_UNKNOWN_FORMAT); | |
388 | return -1; | |
389 | } | |
390 | break; | |
391 | ||
392 | } | |
393 | ||
394 | return 1; | |
395 | ||
396 | } | |
9ea1b878 DSH |
397 | |
398 | static int parse_tagging(const char *vstart, int vlen, int *ptag, int *pclass) | |
0f113f3e MC |
399 | { |
400 | char erch[2]; | |
401 | long tag_num; | |
402 | char *eptr; | |
403 | if (!vstart) | |
404 | return 0; | |
405 | tag_num = strtoul(vstart, &eptr, 10); | |
406 | /* Check we haven't gone past max length: should be impossible */ | |
407 | if (eptr && *eptr && (eptr > vstart + vlen)) | |
408 | return 0; | |
409 | if (tag_num < 0) { | |
410 | ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_NUMBER); | |
411 | return 0; | |
412 | } | |
413 | *ptag = tag_num; | |
414 | /* If we have non numeric characters, parse them */ | |
415 | if (eptr) | |
416 | vlen -= eptr - vstart; | |
417 | else | |
418 | vlen = 0; | |
419 | if (vlen) { | |
420 | switch (*eptr) { | |
421 | ||
422 | case 'U': | |
423 | *pclass = V_ASN1_UNIVERSAL; | |
424 | break; | |
425 | ||
426 | case 'A': | |
427 | *pclass = V_ASN1_APPLICATION; | |
428 | break; | |
429 | ||
430 | case 'P': | |
431 | *pclass = V_ASN1_PRIVATE; | |
432 | break; | |
433 | ||
434 | case 'C': | |
435 | *pclass = V_ASN1_CONTEXT_SPECIFIC; | |
436 | break; | |
437 | ||
438 | default: | |
439 | erch[0] = *eptr; | |
440 | erch[1] = 0; | |
441 | ASN1err(ASN1_F_PARSE_TAGGING, ASN1_R_INVALID_MODIFIER); | |
442 | ERR_add_error_data(2, "Char=", erch); | |
443 | return 0; | |
0f113f3e MC |
444 | |
445 | } | |
446 | } else | |
447 | *pclass = V_ASN1_CONTEXT_SPECIFIC; | |
448 | ||
449 | return 1; | |
450 | ||
451 | } | |
9ea1b878 DSH |
452 | |
453 | /* Handle multiple types: SET and SEQUENCE */ | |
454 | ||
c4137b5e DSH |
455 | static ASN1_TYPE *asn1_multi(int utype, const char *section, X509V3_CTX *cnf, |
456 | int depth, int *perr) | |
0f113f3e MC |
457 | { |
458 | ASN1_TYPE *ret = NULL; | |
459 | STACK_OF(ASN1_TYPE) *sk = NULL; | |
460 | STACK_OF(CONF_VALUE) *sect = NULL; | |
461 | unsigned char *der = NULL; | |
462 | int derlen; | |
463 | int i; | |
464 | sk = sk_ASN1_TYPE_new_null(); | |
465 | if (!sk) | |
466 | goto bad; | |
467 | if (section) { | |
468 | if (!cnf) | |
469 | goto bad; | |
470 | sect = X509V3_get_section(cnf, (char *)section); | |
471 | if (!sect) | |
472 | goto bad; | |
473 | for (i = 0; i < sk_CONF_VALUE_num(sect); i++) { | |
474 | ASN1_TYPE *typ = | |
c4137b5e DSH |
475 | generate_v3(sk_CONF_VALUE_value(sect, i)->value, cnf, |
476 | depth + 1, perr); | |
0f113f3e MC |
477 | if (!typ) |
478 | goto bad; | |
479 | if (!sk_ASN1_TYPE_push(sk, typ)) | |
480 | goto bad; | |
481 | } | |
482 | } | |
483 | ||
484 | /* | |
485 | * Now we has a STACK of the components, convert to the correct form | |
486 | */ | |
487 | ||
488 | if (utype == V_ASN1_SET) | |
489 | derlen = i2d_ASN1_SET_ANY(sk, &der); | |
490 | else | |
491 | derlen = i2d_ASN1_SEQUENCE_ANY(sk, &der); | |
492 | ||
493 | if (derlen < 0) | |
494 | goto bad; | |
75ebbd9a | 495 | if ((ret = ASN1_TYPE_new()) == NULL) |
0f113f3e | 496 | goto bad; |
75ebbd9a | 497 | if ((ret->value.asn1_string = ASN1_STRING_type_new(utype)) == NULL) |
0f113f3e MC |
498 | goto bad; |
499 | ||
500 | ret->type = utype; | |
0f113f3e MC |
501 | ret->value.asn1_string->data = der; |
502 | ret->value.asn1_string->length = derlen; | |
503 | ||
504 | der = NULL; | |
505 | ||
506 | bad: | |
507 | ||
b548a1f1 | 508 | OPENSSL_free(der); |
0f113f3e | 509 | |
2ace7450 | 510 | sk_ASN1_TYPE_pop_free(sk, ASN1_TYPE_free); |
efa7dd64 | 511 | X509V3_section_free(cnf, sect); |
0f113f3e MC |
512 | |
513 | return ret; | |
514 | } | |
515 | ||
516 | static int append_exp(tag_exp_arg *arg, int exp_tag, int exp_class, | |
517 | int exp_constructed, int exp_pad, int imp_ok) | |
518 | { | |
519 | tag_exp_type *exp_tmp; | |
520 | /* Can only have IMPLICIT if permitted */ | |
521 | if ((arg->imp_tag != -1) && !imp_ok) { | |
522 | ASN1err(ASN1_F_APPEND_EXP, ASN1_R_ILLEGAL_IMPLICIT_TAG); | |
523 | return 0; | |
524 | } | |
525 | ||
526 | if (arg->exp_count == ASN1_FLAG_EXP_MAX) { | |
527 | ASN1err(ASN1_F_APPEND_EXP, ASN1_R_DEPTH_EXCEEDED); | |
528 | return 0; | |
529 | } | |
530 | ||
531 | exp_tmp = &arg->exp_list[arg->exp_count++]; | |
532 | ||
533 | /* | |
534 | * If IMPLICIT set tag to implicit value then reset implicit tag since it | |
535 | * has been used. | |
536 | */ | |
537 | if (arg->imp_tag != -1) { | |
538 | exp_tmp->exp_tag = arg->imp_tag; | |
539 | exp_tmp->exp_class = arg->imp_class; | |
540 | arg->imp_tag = -1; | |
541 | arg->imp_class = -1; | |
542 | } else { | |
543 | exp_tmp->exp_tag = exp_tag; | |
544 | exp_tmp->exp_class = exp_class; | |
545 | } | |
546 | exp_tmp->exp_constructed = exp_constructed; | |
547 | exp_tmp->exp_pad = exp_pad; | |
548 | ||
549 | return 1; | |
550 | } | |
9ea1b878 DSH |
551 | |
552 | static int asn1_str2tag(const char *tagstr, int len) | |
0f113f3e MC |
553 | { |
554 | unsigned int i; | |
555 | static const struct tag_name_st *tntmp, tnst[] = { | |
556 | ASN1_GEN_STR("BOOL", V_ASN1_BOOLEAN), | |
557 | ASN1_GEN_STR("BOOLEAN", V_ASN1_BOOLEAN), | |
558 | ASN1_GEN_STR("NULL", V_ASN1_NULL), | |
559 | ASN1_GEN_STR("INT", V_ASN1_INTEGER), | |
560 | ASN1_GEN_STR("INTEGER", V_ASN1_INTEGER), | |
561 | ASN1_GEN_STR("ENUM", V_ASN1_ENUMERATED), | |
562 | ASN1_GEN_STR("ENUMERATED", V_ASN1_ENUMERATED), | |
563 | ASN1_GEN_STR("OID", V_ASN1_OBJECT), | |
564 | ASN1_GEN_STR("OBJECT", V_ASN1_OBJECT), | |
565 | ASN1_GEN_STR("UTCTIME", V_ASN1_UTCTIME), | |
566 | ASN1_GEN_STR("UTC", V_ASN1_UTCTIME), | |
567 | ASN1_GEN_STR("GENERALIZEDTIME", V_ASN1_GENERALIZEDTIME), | |
568 | ASN1_GEN_STR("GENTIME", V_ASN1_GENERALIZEDTIME), | |
569 | ASN1_GEN_STR("OCT", V_ASN1_OCTET_STRING), | |
570 | ASN1_GEN_STR("OCTETSTRING", V_ASN1_OCTET_STRING), | |
571 | ASN1_GEN_STR("BITSTR", V_ASN1_BIT_STRING), | |
572 | ASN1_GEN_STR("BITSTRING", V_ASN1_BIT_STRING), | |
573 | ASN1_GEN_STR("UNIVERSALSTRING", V_ASN1_UNIVERSALSTRING), | |
574 | ASN1_GEN_STR("UNIV", V_ASN1_UNIVERSALSTRING), | |
575 | ASN1_GEN_STR("IA5", V_ASN1_IA5STRING), | |
576 | ASN1_GEN_STR("IA5STRING", V_ASN1_IA5STRING), | |
577 | ASN1_GEN_STR("UTF8", V_ASN1_UTF8STRING), | |
578 | ASN1_GEN_STR("UTF8String", V_ASN1_UTF8STRING), | |
579 | ASN1_GEN_STR("BMP", V_ASN1_BMPSTRING), | |
580 | ASN1_GEN_STR("BMPSTRING", V_ASN1_BMPSTRING), | |
581 | ASN1_GEN_STR("VISIBLESTRING", V_ASN1_VISIBLESTRING), | |
582 | ASN1_GEN_STR("VISIBLE", V_ASN1_VISIBLESTRING), | |
583 | ASN1_GEN_STR("PRINTABLESTRING", V_ASN1_PRINTABLESTRING), | |
584 | ASN1_GEN_STR("PRINTABLE", V_ASN1_PRINTABLESTRING), | |
585 | ASN1_GEN_STR("T61", V_ASN1_T61STRING), | |
586 | ASN1_GEN_STR("T61STRING", V_ASN1_T61STRING), | |
587 | ASN1_GEN_STR("TELETEXSTRING", V_ASN1_T61STRING), | |
588 | ASN1_GEN_STR("GeneralString", V_ASN1_GENERALSTRING), | |
589 | ASN1_GEN_STR("GENSTR", V_ASN1_GENERALSTRING), | |
590 | ASN1_GEN_STR("NUMERIC", V_ASN1_NUMERICSTRING), | |
591 | ASN1_GEN_STR("NUMERICSTRING", V_ASN1_NUMERICSTRING), | |
592 | ||
593 | /* Special cases */ | |
594 | ASN1_GEN_STR("SEQUENCE", V_ASN1_SEQUENCE), | |
595 | ASN1_GEN_STR("SEQ", V_ASN1_SEQUENCE), | |
596 | ASN1_GEN_STR("SET", V_ASN1_SET), | |
597 | /* type modifiers */ | |
598 | /* Explicit tag */ | |
599 | ASN1_GEN_STR("EXP", ASN1_GEN_FLAG_EXP), | |
600 | ASN1_GEN_STR("EXPLICIT", ASN1_GEN_FLAG_EXP), | |
601 | /* Implicit tag */ | |
602 | ASN1_GEN_STR("IMP", ASN1_GEN_FLAG_IMP), | |
603 | ASN1_GEN_STR("IMPLICIT", ASN1_GEN_FLAG_IMP), | |
604 | /* OCTET STRING wrapper */ | |
605 | ASN1_GEN_STR("OCTWRAP", ASN1_GEN_FLAG_OCTWRAP), | |
606 | /* SEQUENCE wrapper */ | |
607 | ASN1_GEN_STR("SEQWRAP", ASN1_GEN_FLAG_SEQWRAP), | |
608 | /* SET wrapper */ | |
609 | ASN1_GEN_STR("SETWRAP", ASN1_GEN_FLAG_SETWRAP), | |
610 | /* BIT STRING wrapper */ | |
611 | ASN1_GEN_STR("BITWRAP", ASN1_GEN_FLAG_BITWRAP), | |
612 | ASN1_GEN_STR("FORM", ASN1_GEN_FLAG_FORMAT), | |
613 | ASN1_GEN_STR("FORMAT", ASN1_GEN_FLAG_FORMAT), | |
614 | }; | |
615 | ||
616 | if (len == -1) | |
617 | len = strlen(tagstr); | |
618 | ||
619 | tntmp = tnst; | |
b6eb9827 | 620 | for (i = 0; i < OSSL_NELEM(tnst); i++, tntmp++) { |
86885c28 | 621 | if ((len == tntmp->len) && (strncmp(tntmp->strnam, tagstr, len) == 0)) |
0f113f3e MC |
622 | return tntmp->tag; |
623 | } | |
624 | ||
625 | return -1; | |
626 | } | |
9ea1b878 DSH |
627 | |
628 | static ASN1_TYPE *asn1_str2type(const char *str, int format, int utype) | |
0f113f3e MC |
629 | { |
630 | ASN1_TYPE *atmp = NULL; | |
0f113f3e | 631 | CONF_VALUE vtmp; |
0f113f3e MC |
632 | unsigned char *rdata; |
633 | long rdlen; | |
0f113f3e MC |
634 | int no_unused = 1; |
635 | ||
75ebbd9a | 636 | if ((atmp = ASN1_TYPE_new()) == NULL) { |
0f113f3e MC |
637 | ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE); |
638 | return NULL; | |
639 | } | |
640 | ||
641 | if (!str) | |
642 | str = ""; | |
643 | ||
644 | switch (utype) { | |
645 | ||
646 | case V_ASN1_NULL: | |
647 | if (str && *str) { | |
648 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_NULL_VALUE); | |
649 | goto bad_form; | |
650 | } | |
651 | break; | |
652 | ||
653 | case V_ASN1_BOOLEAN: | |
654 | if (format != ASN1_GEN_FORMAT_ASCII) { | |
655 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_NOT_ASCII_FORMAT); | |
656 | goto bad_form; | |
657 | } | |
658 | vtmp.name = NULL; | |
659 | vtmp.section = NULL; | |
660 | vtmp.value = (char *)str; | |
661 | if (!X509V3_get_value_bool(&vtmp, &atmp->value.boolean)) { | |
662 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BOOLEAN); | |
663 | goto bad_str; | |
664 | } | |
665 | break; | |
666 | ||
667 | case V_ASN1_INTEGER: | |
668 | case V_ASN1_ENUMERATED: | |
669 | if (format != ASN1_GEN_FORMAT_ASCII) { | |
670 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_INTEGER_NOT_ASCII_FORMAT); | |
671 | goto bad_form; | |
672 | } | |
75ebbd9a RS |
673 | if ((atmp->value.integer |
674 | = s2i_ASN1_INTEGER(NULL, (char *)str)) == NULL) { | |
0f113f3e MC |
675 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_INTEGER); |
676 | goto bad_str; | |
677 | } | |
678 | break; | |
679 | ||
680 | case V_ASN1_OBJECT: | |
681 | if (format != ASN1_GEN_FORMAT_ASCII) { | |
682 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_OBJECT_NOT_ASCII_FORMAT); | |
683 | goto bad_form; | |
684 | } | |
75ebbd9a | 685 | if ((atmp->value.object = OBJ_txt2obj(str, 0)) == NULL) { |
0f113f3e MC |
686 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_OBJECT); |
687 | goto bad_str; | |
688 | } | |
689 | break; | |
690 | ||
691 | case V_ASN1_UTCTIME: | |
692 | case V_ASN1_GENERALIZEDTIME: | |
693 | if (format != ASN1_GEN_FORMAT_ASCII) { | |
694 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_TIME_NOT_ASCII_FORMAT); | |
695 | goto bad_form; | |
696 | } | |
75ebbd9a | 697 | if ((atmp->value.asn1_string = ASN1_STRING_new()) == NULL) { |
0f113f3e MC |
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 | ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE); | |
703 | goto bad_str; | |
704 | } | |
705 | atmp->value.asn1_string->type = utype; | |
706 | if (!ASN1_TIME_check(atmp->value.asn1_string)) { | |
707 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_TIME_VALUE); | |
708 | goto bad_str; | |
709 | } | |
710 | ||
711 | break; | |
712 | ||
713 | case V_ASN1_BMPSTRING: | |
714 | case V_ASN1_PRINTABLESTRING: | |
715 | case V_ASN1_IA5STRING: | |
716 | case V_ASN1_T61STRING: | |
717 | case V_ASN1_UTF8STRING: | |
718 | case V_ASN1_VISIBLESTRING: | |
719 | case V_ASN1_UNIVERSALSTRING: | |
720 | case V_ASN1_GENERALSTRING: | |
721 | case V_ASN1_NUMERICSTRING: | |
0f113f3e MC |
722 | if (format == ASN1_GEN_FORMAT_ASCII) |
723 | format = MBSTRING_ASC; | |
724 | else if (format == ASN1_GEN_FORMAT_UTF8) | |
725 | format = MBSTRING_UTF8; | |
726 | else { | |
727 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_FORMAT); | |
728 | goto bad_form; | |
729 | } | |
730 | ||
731 | if (ASN1_mbstring_copy(&atmp->value.asn1_string, (unsigned char *)str, | |
732 | -1, format, ASN1_tag2bit(utype)) <= 0) { | |
733 | ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE); | |
734 | goto bad_str; | |
735 | } | |
736 | ||
737 | break; | |
738 | ||
739 | case V_ASN1_BIT_STRING: | |
0f113f3e | 740 | case V_ASN1_OCTET_STRING: |
75ebbd9a | 741 | if ((atmp->value.asn1_string = ASN1_STRING_new()) == NULL) { |
0f113f3e MC |
742 | ASN1err(ASN1_F_ASN1_STR2TYPE, ERR_R_MALLOC_FAILURE); |
743 | goto bad_form; | |
744 | } | |
745 | ||
746 | if (format == ASN1_GEN_FORMAT_HEX) { | |
75ebbd9a | 747 | if ((rdata = string_to_hex((char *)str, &rdlen)) == NULL) { |
0f113f3e MC |
748 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_HEX); |
749 | goto bad_str; | |
750 | } | |
0f113f3e MC |
751 | atmp->value.asn1_string->data = rdata; |
752 | atmp->value.asn1_string->length = rdlen; | |
753 | atmp->value.asn1_string->type = utype; | |
0f113f3e MC |
754 | } else if (format == ASN1_GEN_FORMAT_ASCII) |
755 | ASN1_STRING_set(atmp->value.asn1_string, str, -1); | |
756 | else if ((format == ASN1_GEN_FORMAT_BITLIST) | |
757 | && (utype == V_ASN1_BIT_STRING)) { | |
758 | if (!CONF_parse_list | |
759 | (str, ',', 1, bitstr_cb, atmp->value.bit_string)) { | |
760 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_LIST_ERROR); | |
761 | goto bad_str; | |
762 | } | |
763 | no_unused = 0; | |
764 | ||
765 | } else { | |
766 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_ILLEGAL_BITSTRING_FORMAT); | |
767 | goto bad_form; | |
768 | } | |
769 | ||
770 | if ((utype == V_ASN1_BIT_STRING) && no_unused) { | |
771 | atmp->value.asn1_string->flags | |
772 | &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); | |
773 | atmp->value.asn1_string->flags |= ASN1_STRING_FLAG_BITS_LEFT; | |
774 | } | |
775 | ||
776 | break; | |
777 | ||
778 | default: | |
779 | ASN1err(ASN1_F_ASN1_STR2TYPE, ASN1_R_UNSUPPORTED_TYPE); | |
780 | goto bad_str; | |
0f113f3e MC |
781 | } |
782 | ||
783 | atmp->type = utype; | |
784 | return atmp; | |
785 | ||
786 | bad_str: | |
787 | ERR_add_error_data(2, "string=", str); | |
788 | bad_form: | |
789 | ||
790 | ASN1_TYPE_free(atmp); | |
791 | return NULL; | |
792 | ||
793 | } | |
9ea1b878 DSH |
794 | |
795 | static int bitstr_cb(const char *elem, int len, void *bitstr) | |
0f113f3e MC |
796 | { |
797 | long bitnum; | |
798 | char *eptr; | |
799 | if (!elem) | |
800 | return 0; | |
801 | bitnum = strtoul(elem, &eptr, 10); | |
802 | if (eptr && *eptr && (eptr != elem + len)) | |
803 | return 0; | |
804 | if (bitnum < 0) { | |
805 | ASN1err(ASN1_F_BITSTR_CB, ASN1_R_INVALID_NUMBER); | |
806 | return 0; | |
807 | } | |
808 | if (!ASN1_BIT_STRING_set_bit(bitstr, bitnum, 1)) { | |
809 | ASN1err(ASN1_F_BITSTR_CB, ERR_R_MALLOC_FAILURE); | |
810 | return 0; | |
811 | } | |
812 | return 1; | |
813 | } | |
9ea1b878 | 814 | |
30765fed | 815 | static int mask_cb(const char *elem, int len, void *arg) |
0f113f3e MC |
816 | { |
817 | unsigned long *pmask = arg, tmpmask; | |
818 | int tag; | |
2747d73c KR |
819 | if (elem == NULL) |
820 | return 0; | |
86885c28 | 821 | if ((len == 3) && (strncmp(elem, "DIR", 3) == 0)) { |
0f113f3e MC |
822 | *pmask |= B_ASN1_DIRECTORYSTRING; |
823 | return 1; | |
824 | } | |
825 | tag = asn1_str2tag(elem, len); | |
826 | if (!tag || (tag & ASN1_GEN_FLAG)) | |
827 | return 0; | |
828 | tmpmask = ASN1_tag2bit(tag); | |
829 | if (!tmpmask) | |
830 | return 0; | |
831 | *pmask |= tmpmask; | |
832 | return 1; | |
833 | } | |
30765fed DSH |
834 | |
835 | int ASN1_str2mask(const char *str, unsigned long *pmask) | |
0f113f3e MC |
836 | { |
837 | *pmask = 0; | |
838 | return CONF_parse_list(str, '|', 1, mask_cb, pmask); | |
839 | } |