1/* v3_alt.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
4 * project.
5 */
6/* ====================================================================
7 * Copyright (c) 1999-2003 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
14 * notice, this list of conditions and the following disclaimer.
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#include <stdio.h>
59#include <string.h>
60
61#include <openssl/conf.h>
62#include <openssl/err.h>
63#include <openssl/mem.h>
64#include <openssl/obj.h>
65#include <openssl/x509v3.h>
66
67#include "internal.h"
68
69
70static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
71 X509V3_CTX *ctx,
72 STACK_OF(CONF_VALUE) *nval);
73static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
74 X509V3_CTX *ctx,
75 STACK_OF(CONF_VALUE) *nval);
76static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
77static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
78static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
79static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
80
81const X509V3_EXT_METHOD v3_alt[] = {
82 {NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
83 0, 0, 0, 0,
84 0, 0,
85 (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
86 (X509V3_EXT_V2I)v2i_subject_alt,
87 NULL, NULL, NULL},
88
89 {NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
90 0, 0, 0, 0,
91 0, 0,
92 (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
93 (X509V3_EXT_V2I)v2i_issuer_alt,
94 NULL, NULL, NULL},
95
96 {NID_certificate_issuer, 0, ASN1_ITEM_ref(GENERAL_NAMES),
97 0, 0, 0, 0,
98 0, 0,
99 (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
100 NULL, NULL, NULL, NULL},
101};
102
103STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
104 GENERAL_NAMES *gens,
105 STACK_OF(CONF_VALUE) *ret)
106{
107 size_t i;
108 GENERAL_NAME *gen;
109 for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
110 gen = sk_GENERAL_NAME_value(gens, i);
111 ret = i2v_GENERAL_NAME(method, gen, ret);
112 }
113 if (!ret)
114 return sk_CONF_VALUE_new_null();
115 return ret;
116}
117
118STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
119 GENERAL_NAME *gen,
120 STACK_OF(CONF_VALUE) *ret)
121{
122 unsigned char *p;
123 char oline[256], htmp[5];
124 int i;
125 switch (gen->type) {
126 case GEN_OTHERNAME:
127 if (!X509V3_add_value("othername", "<unsupported>", &ret))
128 return NULL;
129 break;
130
131 case GEN_X400:
132 if (!X509V3_add_value("X400Name", "<unsupported>", &ret))
133 return NULL;
134 break;
135
136 case GEN_EDIPARTY:
137 if (!X509V3_add_value("EdiPartyName", "<unsupported>", &ret))
138 return NULL;
139 break;
140
141 case GEN_EMAIL:
142 if (!X509V3_add_value_uchar("email", gen->d.ia5->data, &ret))
143 return NULL;
144 break;
145
146 case GEN_DNS:
147 if (!X509V3_add_value_uchar("DNS", gen->d.ia5->data, &ret))
148 return NULL;
149 break;
150
151 case GEN_URI:
152 if (!X509V3_add_value_uchar("URI", gen->d.ia5->data, &ret))
153 return NULL;
154 break;
155
156 case GEN_DIRNAME:
157 if (X509_NAME_oneline(gen->d.dirn, oline, 256) == NULL
158 || !X509V3_add_value("DirName", oline, &ret))
159 return NULL;
160 break;
161
162 case GEN_IPADD:
163 p = gen->d.ip->data;
164 if (gen->d.ip->length == 4)
165 BIO_snprintf(oline, sizeof oline,
166 "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
167 else if (gen->d.ip->length == 16) {
168 oline[0] = 0;
169 for (i = 0; i < 8; i++) {
170 BIO_snprintf(htmp, sizeof htmp, "%X", p[0] << 8 | p[1]);
171 p += 2;
172 BUF_strlcat(oline, htmp, sizeof(oline));
173 if (i != 7)
174 BUF_strlcat(oline, ":", sizeof(oline));
175 }
176 } else {
177 if (!X509V3_add_value("IP Address", "<invalid>", &ret))
178 return NULL;
179 break;
180 }
181 if (!X509V3_add_value("IP Address", oline, &ret))
182 return NULL;
183 break;
184
185 case GEN_RID:
186 i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
187 if (!X509V3_add_value("Registered ID", oline, &ret))
188 return NULL;
189 break;
190 }
191 return ret;
192}
193
194int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
195{
196 unsigned char *p;
197 int i;
198 switch (gen->type) {
199 case GEN_OTHERNAME:
200 BIO_printf(out, "othername:<unsupported>");
201 break;
202
203 case GEN_X400:
204 BIO_printf(out, "X400Name:<unsupported>");
205 break;
206
207 case GEN_EDIPARTY:
208 /* Maybe fix this: it is supported now */
209 BIO_printf(out, "EdiPartyName:<unsupported>");
210 break;
211
212 case GEN_EMAIL:
213 BIO_printf(out, "email:%s", gen->d.ia5->data);
214 break;
215
216 case GEN_DNS:
217 BIO_printf(out, "DNS:%s", gen->d.ia5->data);
218 break;
219
220 case GEN_URI:
221 BIO_printf(out, "URI:%s", gen->d.ia5->data);
222 break;
223
224 case GEN_DIRNAME:
225 BIO_printf(out, "DirName: ");
226 X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
227 break;
228
229 case GEN_IPADD:
230 p = gen->d.ip->data;
231 if (gen->d.ip->length == 4)
232 BIO_printf(out, "IP Address:%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
233 else if (gen->d.ip->length == 16) {
234 BIO_printf(out, "IP Address");
235 for (i = 0; i < 8; i++) {
236 BIO_printf(out, ":%X", p[0] << 8 | p[1]);
237 p += 2;
238 }
239 BIO_puts(out, "\n");
240 } else {
241 BIO_printf(out, "IP Address:<invalid>");
242 break;
243 }
244 break;
245
246 case GEN_RID:
247 BIO_printf(out, "Registered ID");
248 i2a_ASN1_OBJECT(out, gen->d.rid);
249 break;
250 }
251 return 1;
252}
253
254static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
255 X509V3_CTX *ctx,
256 STACK_OF(CONF_VALUE) *nval)
257{
258 GENERAL_NAMES *gens = NULL;
259 CONF_VALUE *cnf;
260 size_t i;
261 if (!(gens = sk_GENERAL_NAME_new_null())) {
262 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
263 return NULL;
264 }
265 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
266 cnf = sk_CONF_VALUE_value(nval, i);
267 if (!x509v3_name_cmp(cnf->name, "issuer") && cnf->value &&
268 !strcmp(cnf->value, "copy")) {
269 if (!copy_issuer(ctx, gens))
270 goto err;
271 } else {
272 GENERAL_NAME *gen;
273 if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
274 goto err;
275 sk_GENERAL_NAME_push(gens, gen);
276 }
277 }
278 return gens;
279 err:
280 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
281 return NULL;
282}
283
284/* Append subject altname of issuer to issuer alt name of subject */
285
286static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
287{
288 GENERAL_NAMES *ialt;
289 GENERAL_NAME *gen;
290 X509_EXTENSION *ext;
291 int i;
292 size_t j;
293 if (ctx && (ctx->flags == CTX_TEST))
294 return 1;
295 if (!ctx || !ctx->issuer_cert) {
296 OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_ISSUER_DETAILS);
297 goto err;
298 }
299 i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
300 if (i < 0)
301 return 1;
302 if (!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
303 !(ialt = X509V3_EXT_d2i(ext))) {
304 OPENSSL_PUT_ERROR(X509V3, X509V3_R_ISSUER_DECODE_ERROR);
305 goto err;
306 }
307
308 for (j = 0; j < sk_GENERAL_NAME_num(ialt); j++) {
309 gen = sk_GENERAL_NAME_value(ialt, j);
310 if (!sk_GENERAL_NAME_push(gens, gen)) {
311 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
312 goto err;
313 }
314 }
315 sk_GENERAL_NAME_free(ialt);
316
317 return 1;
318
319 err:
320 return 0;
321
322}
323
324static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
325 X509V3_CTX *ctx,
326 STACK_OF(CONF_VALUE) *nval)
327{
328 GENERAL_NAMES *gens = NULL;
329 CONF_VALUE *cnf;
330 size_t i;
331 if (!(gens = sk_GENERAL_NAME_new_null())) {
332 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
333 return NULL;
334 }
335 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
336 cnf = sk_CONF_VALUE_value(nval, i);
337 if (!x509v3_name_cmp(cnf->name, "email") && cnf->value &&
338 !strcmp(cnf->value, "copy")) {
339 if (!copy_email(ctx, gens, 0))
340 goto err;
341 } else if (!x509v3_name_cmp(cnf->name, "email") && cnf->value &&
342 !strcmp(cnf->value, "move")) {
343 if (!copy_email(ctx, gens, 1))
344 goto err;
345 } else {
346 GENERAL_NAME *gen;
347 if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
348 goto err;
349 sk_GENERAL_NAME_push(gens, gen);
350 }
351 }
352 return gens;
353 err:
354 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
355 return NULL;
356}
357
358/*
359 * Copy any email addresses in a certificate or request to GENERAL_NAMES
360 */
361
362static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
363{
364 X509_NAME *nm;
365 ASN1_IA5STRING *email = NULL;
366 X509_NAME_ENTRY *ne;
367 GENERAL_NAME *gen = NULL;
368 int i;
369 if (ctx != NULL && ctx->flags == CTX_TEST)
370 return 1;
371 if (!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
372 OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_SUBJECT_DETAILS);
373 goto err;
374 }
375 /* Find the subject name */
376 if (ctx->subject_cert)
377 nm = X509_get_subject_name(ctx->subject_cert);
378 else
379 nm = X509_REQ_get_subject_name(ctx->subject_req);
380
381 /* Now add any email address(es) to STACK */
382 i = -1;
383 while ((i = X509_NAME_get_index_by_NID(nm,
384 NID_pkcs9_emailAddress, i)) >= 0) {
385 ne = X509_NAME_get_entry(nm, i);
386 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
387 if (move_p) {
388 X509_NAME_delete_entry(nm, i);
389 X509_NAME_ENTRY_free(ne);
390 i--;
391 }
392 if (!email || !(gen = GENERAL_NAME_new())) {
393 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
394 goto err;
395 }
396 gen->d.ia5 = email;
397 email = NULL;
398 gen->type = GEN_EMAIL;
399 if (!sk_GENERAL_NAME_push(gens, gen)) {
400 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
401 goto err;
402 }
403 gen = NULL;
404 }
405
406 return 1;
407
408 err:
409 GENERAL_NAME_free(gen);
410 M_ASN1_IA5STRING_free(email);
411 return 0;
412
413}
414
415GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
416 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
417{
418 GENERAL_NAME *gen;
419 GENERAL_NAMES *gens = NULL;
420 CONF_VALUE *cnf;
421 size_t i;
422 if (!(gens = sk_GENERAL_NAME_new_null())) {
423 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
424 return NULL;
425 }
426 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
427 cnf = sk_CONF_VALUE_value(nval, i);
428 if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
429 goto err;
430 sk_GENERAL_NAME_push(gens, gen);
431 }
432 return gens;
433 err:
434 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
435 return NULL;
436}
437
438GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method,
439 X509V3_CTX *ctx, CONF_VALUE *cnf)
440{
441 return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
442}
443
444GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
445 const X509V3_EXT_METHOD *method,
446 X509V3_CTX *ctx, int gen_type, char *value,
447 int is_nc)
448{
449 char is_string = 0;
450 GENERAL_NAME *gen = NULL;
451
452 if (!value) {
453 OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
454 return NULL;
455 }
456
457 if (out)
458 gen = out;
459 else {
460 gen = GENERAL_NAME_new();
461 if (gen == NULL) {
462 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
463 return NULL;
464 }
465 }
466
467 switch (gen_type) {
468 case GEN_URI:
469 case GEN_EMAIL:
470 case GEN_DNS:
471 is_string = 1;
472 break;
473
474 case GEN_RID:
475 {
476 ASN1_OBJECT *obj;
477 if (!(obj = OBJ_txt2obj(value, 0))) {
478 OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_OBJECT);
479 ERR_add_error_data(2, "value=", value);
480 goto err;
481 }
482 gen->d.rid = obj;
483 }
484 break;
485
486 case GEN_IPADD:
487 if (is_nc)
488 gen->d.ip = a2i_IPADDRESS_NC(value);
489 else
490 gen->d.ip = a2i_IPADDRESS(value);
491 if (gen->d.ip == NULL) {
492 OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_IP_ADDRESS);
493 ERR_add_error_data(2, "value=", value);
494 goto err;
495 }
496 break;
497
498 case GEN_DIRNAME:
499 if (!do_dirname(gen, value, ctx)) {
500 OPENSSL_PUT_ERROR(X509V3, X509V3_R_DIRNAME_ERROR);
501 goto err;
502 }
503 break;
504
505 case GEN_OTHERNAME:
506 if (!do_othername(gen, value, ctx)) {
507 OPENSSL_PUT_ERROR(X509V3, X509V3_R_OTHERNAME_ERROR);
508 goto err;
509 }
510 break;
511 default:
512 OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNSUPPORTED_TYPE);
513 goto err;
514 }
515
516 if (is_string) {
517 if (!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
518 !ASN1_STRING_set(gen->d.ia5, (unsigned char *)value,
519 strlen(value))) {
520 OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
521 goto err;
522 }
523 }
524
525 gen->type = gen_type;
526
527 return gen;
528
529 err:
530 if (!out)
531 GENERAL_NAME_free(gen);
532 return NULL;
533}
534
535GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
536 const X509V3_EXT_METHOD *method,
537 X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc)
538{
539 int type;
540
541 char *name, *value;
542
543 name = cnf->name;
544 value = cnf->value;
545
546 if (!value) {
547 OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
548 return NULL;
549 }
550
551 if (!x509v3_name_cmp(name, "email"))
552 type = GEN_EMAIL;
553 else if (!x509v3_name_cmp(name, "URI"))
554 type = GEN_URI;
555 else if (!x509v3_name_cmp(name, "DNS"))
556 type = GEN_DNS;
557 else if (!x509v3_name_cmp(name, "RID"))
558 type = GEN_RID;
559 else if (!x509v3_name_cmp(name, "IP"))
560 type = GEN_IPADD;
561 else if (!x509v3_name_cmp(name, "dirName"))
562 type = GEN_DIRNAME;
563 else if (!x509v3_name_cmp(name, "otherName"))
564 type = GEN_OTHERNAME;
565 else {
566 OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNSUPPORTED_OPTION);
567 ERR_add_error_data(2, "name=", name);
568 return NULL;
569 }
570
571 return a2i_GENERAL_NAME(out, method, ctx, type, value, is_nc);
572
573}
574
575static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
576{
577 char *objtmp = NULL, *p;
578 int objlen;
579 if (!(p = strchr(value, ';')))
580 return 0;
581 if (!(gen->d.otherName = OTHERNAME_new()))
582 return 0;
583 /*
584 * Free this up because we will overwrite it. no need to free type_id
585 * because it is static
586 */
587 ASN1_TYPE_free(gen->d.otherName->value);
588 if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))
589 return 0;
590 objlen = p - value;
591 objtmp = OPENSSL_malloc(objlen + 1);
592 if (objtmp == NULL)
593 return 0;
594 BUF_strlcpy(objtmp, value, objlen + 1);
595 gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
596 OPENSSL_free(objtmp);
597 if (!gen->d.otherName->type_id)
598 return 0;
599 return 1;
600}
601
602static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
603{
604 int ret = 0;
605 STACK_OF(CONF_VALUE) *sk = NULL;
606 X509_NAME *nm = X509_NAME_new();
607 if (nm == NULL)
608 goto err;
609 sk = X509V3_get_section(ctx, value);
610 if (sk == NULL) {
611 OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
612 ERR_add_error_data(2, "section=", value);
613 goto err;
614 }
615 /* FIXME: should allow other character types... */
616 if (!X509V3_NAME_from_section(nm, sk, MBSTRING_ASC))
617 goto err;
618 gen->d.dirn = nm;
619 ret = 1;
620
621 err:
622 if (!ret)
623 X509_NAME_free(nm);
624 X509V3_section_free(ctx, sk);
625 return ret;
626}
627