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