1 /* v3_alt.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999-2003 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 <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/conf.h>
62 #include <openssl/x509v3.h>
63
64 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
65 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
66 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
67 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
68 static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
69 static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
70
71 const X509V3_EXT_METHOD v3_alt[] = {
72 { NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
73 0,0,0,0,
74 0,0,
75 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
76 (X509V3_EXT_V2I)v2i_subject_alt,
77 NULL, NULL, NULL},
78
79 { NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
80 0,0,0,0,
81 0,0,
82 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
83 (X509V3_EXT_V2I)v2i_issuer_alt,
84 NULL, NULL, NULL},
85
86 { NID_certificate_issuer, 0, ASN1_ITEM_ref(GENERAL_NAMES),
87 0,0,0,0,
88 0,0,
89 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
90 NULL, NULL, NULL, NULL},
91 };
92
93 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
94 GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret)
95 {
96 int i;
97 GENERAL_NAME *gen;
98 for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
99 gen = sk_GENERAL_NAME_value(gens, i);
100 ret = i2v_GENERAL_NAME(method, gen, ret);
101 }
102 if(!ret) return sk_CONF_VALUE_new_null();
103 return ret;
104 }
105
106 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
107 GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret)
108 {
109 unsigned char *p;
110 char oline[256], htmp[5];
111 int i;
112 switch (gen->type)
113 {
114 case GEN_OTHERNAME:
115 X509V3_add_value("othername","<unsupported>", &ret);
116 break;
117
118 case GEN_X400:
119 X509V3_add_value("X400Name","<unsupported>", &ret);
120 break;
121
122 case GEN_EDIPARTY:
123 X509V3_add_value("EdiPartyName","<unsupported>", &ret);
124 break;
125
126 case GEN_EMAIL:
127 X509V3_add_value_uchar("email",gen->d.ia5->data, &ret);
128 break;
129
130 case GEN_DNS:
131 X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret);
132 break;
133
134 case GEN_URI:
135 X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret);
136 break;
137
138 case GEN_DIRNAME:
139 X509_NAME_oneline(gen->d.dirn, oline, 256);
140 X509V3_add_value("DirName",oline, &ret);
141 break;
142
143 case GEN_IPADD:
144 p = gen->d.ip->data;
145 if(gen->d.ip->length == 4)
146 BIO_snprintf(oline, sizeof oline,
147 "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
148 else if(gen->d.ip->length == 16)
149 {
150 oline[0] = 0;
151 for (i = 0; i < 8; i++)
152 {
153 BIO_snprintf(htmp, sizeof htmp,
154 "%X", p[0] << 8 | p[1]);
155 p += 2;
156 strcat(oline, htmp);
157 if (i != 7)
158 strcat(oline, ":");
159 }
160 }
161 else
162 {
163 X509V3_add_value("IP Address","<invalid>", &ret);
164 break;
165 }
166 X509V3_add_value("IP Address",oline, &ret);
167 break;
168
169 case GEN_RID:
170 i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
171 X509V3_add_value("Registered ID",oline, &ret);
172 break;
173 }
174 return ret;
175 }
176
177 int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
178 {
179 unsigned char *p;
180 int i;
181 switch (gen->type)
182 {
183 case GEN_OTHERNAME:
184 BIO_printf(out, "othername:<unsupported>");
185 break;
186
187 case GEN_X400:
188 BIO_printf(out, "X400Name:<unsupported>");
189 break;
190
191 case GEN_EDIPARTY:
192 /* Maybe fix this: it is supported now */
193 BIO_printf(out, "EdiPartyName:<unsupported>");
194 break;
195
196 case GEN_EMAIL:
197 BIO_printf(out, "email:%s",gen->d.ia5->data);
198 break;
199
200 case GEN_DNS:
201 BIO_printf(out, "DNS:%s",gen->d.ia5->data);
202 break;
203
204 case GEN_URI:
205 BIO_printf(out, "URI:%s",gen->d.ia5->data);
206 break;
207
208 case GEN_DIRNAME:
209 BIO_printf(out, "DirName: ");
210 X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
211 break;
212
213 case GEN_IPADD:
214 p = gen->d.ip->data;
215 if(gen->d.ip->length == 4)
216 BIO_printf(out, "IP Address:%d.%d.%d.%d",
217 p[0], p[1], p[2], p[3]);
218 else if(gen->d.ip->length == 16)
219 {
220 BIO_printf(out, "IP Address");
221 for (i = 0; i < 8; i++)
222 {
223 BIO_printf(out, ":%X", p[0] << 8 | p[1]);
224 p += 2;
225 }
226 BIO_puts(out, "\n");
227 }
228 else
229 {
230 BIO_printf(out,"IP Address:<invalid>");
231 break;
232 }
233 break;
234
235 case GEN_RID:
236 BIO_printf(out, "Registered ID");
237 i2a_ASN1_OBJECT(out, gen->d.rid);
238 break;
239 }
240 return 1;
241 }
242
243 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
244 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
245 {
246 GENERAL_NAMES *gens = NULL;
247 CONF_VALUE *cnf;
248 int i;
249 if(!(gens = sk_GENERAL_NAME_new_null())) {
250 X509V3err(X509V3_F_V2I_ISSUER_ALT,ERR_R_MALLOC_FAILURE);
251 return NULL;
252 }
253 for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
254 cnf = sk_CONF_VALUE_value(nval, i);
255 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
256 !strcmp(cnf->value, "copy")) {
257 if(!copy_issuer(ctx, gens)) goto err;
258 } else {
259 GENERAL_NAME *gen;
260 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
261 goto err;
262 sk_GENERAL_NAME_push(gens, gen);
263 }
264 }
265 return gens;
266 err:
267 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
268 return NULL;
269 }
270
271 /* Append subject altname of issuer to issuer alt name of subject */
272
273 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
274 {
275 GENERAL_NAMES *ialt;
276 GENERAL_NAME *gen;
277 X509_EXTENSION *ext;
278 int i;
279 if(ctx && (ctx->flags == CTX_TEST)) return 1;
280 if(!ctx || !ctx->issuer_cert) {
281 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
282 goto err;
283 }
284 i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
285 if(i < 0) return 1;
286 if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
287 !(ialt = X509V3_EXT_d2i(ext)) ) {
288 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
289 goto err;
290 }
291
292 for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
293 gen = sk_GENERAL_NAME_value(ialt, i);
294 if(!sk_GENERAL_NAME_push(gens, gen)) {
295 X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
296 goto err;
297 }
298 }
299 sk_GENERAL_NAME_free(ialt);
300
301 return 1;
302
303 err:
304 return 0;
305
306 }
307
308 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
309 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
310 {
311 GENERAL_NAMES *gens = NULL;
312 CONF_VALUE *cnf;
313 int i;
314 if(!(gens = sk_GENERAL_NAME_new_null())) {
315 X509V3err(X509V3_F_V2I_SUBJECT_ALT,ERR_R_MALLOC_FAILURE);
316 return NULL;
317 }
318 for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
319 cnf = sk_CONF_VALUE_value(nval, i);
320 if(!name_cmp(cnf->name, "email") && cnf->value &&
321 !strcmp(cnf->value, "copy")) {
322 if(!copy_email(ctx, gens, 0)) goto err;
323 } else if(!name_cmp(cnf->name, "email") && cnf->value &&
324 !strcmp(cnf->value, "move")) {
325 if(!copy_email(ctx, gens, 1)) goto err;
326 } else {
327 GENERAL_NAME *gen;
328 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
329 goto err;
330 sk_GENERAL_NAME_push(gens, gen);
331 }
332 }
333 return gens;
334 err:
335 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
336 return NULL;
337 }
338
339 /* Copy any email addresses in a certificate or request to
340 * GENERAL_NAMES
341 */
342
343 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
344 {
345 X509_NAME *nm;
346 ASN1_IA5STRING *email = NULL;
347 X509_NAME_ENTRY *ne;
348 GENERAL_NAME *gen = NULL;
349 int i;
350 if(ctx != NULL && ctx->flags == CTX_TEST)
351 return 1;
352 if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
353 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
354 goto err;
355 }
356 /* Find the subject name */
357 if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
358 else nm = X509_REQ_get_subject_name(ctx->subject_req);
359
360 /* Now add any email address(es) to STACK */
361 i = -1;
362 while((i = X509_NAME_get_index_by_NID(nm,
363 NID_pkcs9_emailAddress, i)) >= 0) {
364 ne = X509_NAME_get_entry(nm, i);
365 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
366 if (move_p)
367 {
368 X509_NAME_delete_entry(nm, i);
369 X509_NAME_ENTRY_free(ne);
370 i--;
371 }
372 if(!email || !(gen = GENERAL_NAME_new())) {
373 X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
374 goto err;
375 }
376 gen->d.ia5 = email;
377 email = NULL;
378 gen->type = GEN_EMAIL;
379 if(!sk_GENERAL_NAME_push(gens, gen)) {
380 X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
381 goto err;
382 }
383 gen = NULL;
384 }
385
386
387 return 1;
388
389 err:
390 GENERAL_NAME_free(gen);
391 M_ASN1_IA5STRING_free(email);
392 return 0;
393
394 }
395
396 GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
397 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
398 {
399 GENERAL_NAME *gen;
400 GENERAL_NAMES *gens = NULL;
401 CONF_VALUE *cnf;
402 int i;
403 if(!(gens = sk_GENERAL_NAME_new_null())) {
404 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
405 return NULL;
406 }
407 for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
408 cnf = sk_CONF_VALUE_value(nval, i);
409 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err;
410 sk_GENERAL_NAME_push(gens, gen);
411 }
412 return gens;
413 err:
414 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
415 return NULL;
416 }
417
418 GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
419 CONF_VALUE *cnf)
420 {
421 return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
422 }
423
424 GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
425 const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
426 int gen_type, char *value, int is_nc)
427 {
428 char is_string = 0;
429 GENERAL_NAME *gen = NULL;
430
431 if(!value)
432 {
433 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_MISSING_VALUE);
434 return NULL;
435 }
436
437 if (out)
438 gen = out;
439 else
440 {
441 gen = GENERAL_NAME_new();
442 if(gen == NULL)
443 {
444 X509V3err(X509V3_F_A2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
445 return NULL;
446 }
447 }
448
449 switch (gen_type)
450 {
451 case GEN_URI:
452 case GEN_EMAIL:
453 case GEN_DNS:
454 is_string = 1;
455 break;
456
457 case GEN_RID:
458 {
459 ASN1_OBJECT *obj;
460 if(!(obj = OBJ_txt2obj(value,0)))
461 {
462 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_BAD_OBJECT);
463 ERR_add_error_data(2, "value=", value);
464 goto err;
465 }
466 gen->d.rid = obj;
467 }
468 break;
469
470 case GEN_IPADD:
471 if (is_nc)
472 gen->d.ip = a2i_IPADDRESS_NC(value);
473 else
474 gen->d.ip = a2i_IPADDRESS(value);
475 if(gen->d.ip == NULL)
476 {
477 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
478 ERR_add_error_data(2, "value=", value);
479 goto err;
480 }
481 break;
482
483 case GEN_DIRNAME:
484 if (!do_dirname(gen, value, ctx))
485 {
486 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_DIRNAME_ERROR);
487 goto err;
488 }
489 break;
490
491 case GEN_OTHERNAME:
492 if (!do_othername(gen, value, ctx))
493 {
494 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_OTHERNAME_ERROR);
495 goto err;
496 }
497 break;
498 default:
499 X509V3err(X509V3_F_A2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_TYPE);
500 goto err;
501 }
502
503 if(is_string)
504 {
505 if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
506 !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
507 strlen(value)))
508 {
509 X509V3err(X509V3_F_A2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
510 goto err;
511 }
512 }
513
514 gen->type = gen_type;
515
516 return gen;
517
518 err:
519 if (!out)
520 GENERAL_NAME_free(gen);
521 return NULL;
522 }
523
524 GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
525 const X509V3_EXT_METHOD *method,
526 X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc)
527 {
528 int type;
529
530 char *name, *value;
531
532 name = cnf->name;
533 value = cnf->value;
534
535 if(!value)
536 {
537 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_MISSING_VALUE);
538 return NULL;
539 }
540
541 if(!name_cmp(name, "email"))
542 type = GEN_EMAIL;
543 else if(!name_cmp(name, "URI"))
544 type = GEN_URI;
545 else if(!name_cmp(name, "DNS"))
546 type = GEN_DNS;
547 else if(!name_cmp(name, "RID"))
548 type = GEN_RID;
549 else if(!name_cmp(name, "IP"))
550 type = GEN_IPADD;
551 else if(!name_cmp(name, "dirName"))
552 type = GEN_DIRNAME;
553 else if(!name_cmp(name, "otherName"))
554 type = GEN_OTHERNAME;
555 else
556 {
557 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_UNSUPPORTED_OPTION);
558 ERR_add_error_data(2, "name=", name);
559 return NULL;
560 }
561
562 return a2i_GENERAL_NAME(out, method, ctx, type, value, is_nc);
563
564 }
565
566 static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
567 {
568 char *objtmp = NULL, *p;
569 int objlen;
570 if (!(p = strchr(value, ';')))
571 return 0;
572 if (!(gen->d.otherName = OTHERNAME_new()))
573 return 0;
574 /* Free this up because we will overwrite it.
575 * no need to free type_id because it is static
576 */
577 ASN1_TYPE_free(gen->d.otherName->value);
578 if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))
579 return 0;
580 objlen = p - value;
581 objtmp = OPENSSL_malloc(objlen + 1);
582 strncpy(objtmp, value, objlen);
583 objtmp[objlen] = 0;
584 gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
585 OPENSSL_free(objtmp);
586 if (!gen->d.otherName->type_id)
587 return 0;
588 return 1;
589 }
590
591 static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
592 {
593 int ret;
594 STACK_OF(CONF_VALUE) *sk;
595 X509_NAME *nm;
596 if (!(nm = X509_NAME_new()))
597 return 0;
598 sk = X509V3_get_section(ctx, value);
599 if (!sk)
600 {
601 X509V3err(X509V3_F_DO_DIRNAME,X509V3_R_SECTION_NOT_FOUND);
602 ERR_add_error_data(2, "section=", value);
603 X509_NAME_free(nm);
604 return 0;
605 }
606 /* FIXME: should allow other character types... */
607 ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC);
608 if (!ret)
609 X509_NAME_free(nm);
610 gen->d.dirn = nm;
611 X509V3_section_free(ctx, sk);
612
613 return ret;
614 }