Add support for the noCheck OCSP extension. This is
[openssl.git] / crypto / x509v3 / v3_alt.c
1 /* v3_alt.c */
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3  * project 1999.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999 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);
67 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
68 X509V3_EXT_METHOD v3_alt[] = {
69 { NID_subject_alt_name, 0, &GENERAL_NAMES_it,
70 0,0,0,0,
71 0,0,
72 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
73 (X509V3_EXT_V2I)v2i_subject_alt,
74 NULL, NULL, NULL},
75
76 { NID_issuer_alt_name, 0, &GENERAL_NAMES_it,
77 0,0,0,0,
78 0,0,
79 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
80 (X509V3_EXT_V2I)v2i_issuer_alt,
81 NULL, NULL, NULL},
82 };
83
84 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
85                 GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret)
86 {
87         int i;
88         GENERAL_NAME *gen;
89         for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
90                 gen = sk_GENERAL_NAME_value(gens, i);
91                 ret = i2v_GENERAL_NAME(method, gen, ret);
92         }
93         if(!ret) return sk_CONF_VALUE_new_null();
94         return ret;
95 }
96
97 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
98                                 GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret)
99 {
100         char oline[256];
101         unsigned char *p;
102         switch (gen->type)
103         {
104                 case GEN_OTHERNAME:
105                 X509V3_add_value("othername","<unsupported>", &ret);
106                 break;
107
108                 case GEN_X400:
109                 X509V3_add_value("X400Name","<unsupported>", &ret);
110                 break;
111
112                 case GEN_EDIPARTY:
113                 X509V3_add_value("EdiPartyName","<unsupported>", &ret);
114                 break;
115
116                 case GEN_EMAIL:
117                 X509V3_add_value_uchar("email",gen->d.ia5->data, &ret);
118                 break;
119
120                 case GEN_DNS:
121                 X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret);
122                 break;
123
124                 case GEN_URI:
125                 X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret);
126                 break;
127
128                 case GEN_DIRNAME:
129                 X509_NAME_oneline(gen->d.dirn, oline, 256);
130                 X509V3_add_value("DirName",oline, &ret);
131                 break;
132
133                 case GEN_IPADD:
134                 p = gen->d.ip->data;
135                 /* BUG: doesn't support IPV6 */
136                 if(gen->d.ip->length != 4) {
137                         X509V3_add_value("IP Address","<invalid>", &ret);
138                         break;
139                 }
140                 sprintf(oline, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
141                 X509V3_add_value("IP Address",oline, &ret);
142                 break;
143
144                 case GEN_RID:
145                 i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
146                 X509V3_add_value("Registered ID",oline, &ret);
147                 break;
148         }
149         return ret;
150 }
151
152 int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
153 {
154         char oline[256];
155         unsigned char *p;
156         switch (gen->type)
157         {
158                 case GEN_OTHERNAME:
159                 BIO_printf(out, "othername:<unsupported>");
160                 break;
161
162                 case GEN_X400:
163                 BIO_printf(out, "X400Name:<unsupported>");
164                 break;
165
166                 case GEN_EDIPARTY:
167                 /* Maybe fix this: it is supported now */
168                 BIO_printf(out, "EdiPartyName:<unsupported>");
169                 break;
170
171                 case GEN_EMAIL:
172                 BIO_printf(out, "email:%s",gen->d.ia5->data);
173                 break;
174
175                 case GEN_DNS:
176                 BIO_printf(out, "DNS:%s",gen->d.ia5->data);
177                 break;
178
179                 case GEN_URI:
180                 BIO_printf(out, "URI:%s",gen->d.ia5->data);
181                 break;
182
183                 case GEN_DIRNAME:
184                 X509_NAME_oneline(gen->d.dirn, oline, 256);
185                 BIO_printf(out, "DirName:%s",oline);
186                 break;
187
188                 case GEN_IPADD:
189                 p = gen->d.ip->data;
190                 /* BUG: doesn't support IPV6 */
191                 if(gen->d.ip->length != 4) {
192                         BIO_printf(out,"IP Address:<invalid>");
193                         break;
194                 }
195                 BIO_printf(out, "IP Address:%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
196                 break;
197
198                 case GEN_RID:
199                 BIO_printf(out, "Registered ID");
200                 i2a_ASN1_OBJECT(out, gen->d.rid);
201                 break;
202         }
203         return 1;
204 }
205
206 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
207                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
208 {
209         GENERAL_NAMES *gens = NULL;
210         CONF_VALUE *cnf;
211         int i;
212         if(!(gens = sk_GENERAL_NAME_new_null())) {
213                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
214                 return NULL;
215         }
216         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
217                 cnf = sk_CONF_VALUE_value(nval, i);
218                 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
219                                                 !strcmp(cnf->value, "copy")) {
220                         if(!copy_issuer(ctx, gens)) goto err;
221                 } else {
222                         GENERAL_NAME *gen;
223                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
224                                                                  goto err; 
225                         sk_GENERAL_NAME_push(gens, gen);
226                 }
227         }
228         return gens;
229         err:
230         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
231         return NULL;
232 }
233
234 /* Append subject altname of issuer to issuer alt name of subject */
235
236 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
237 {
238         GENERAL_NAMES *ialt;
239         GENERAL_NAME *gen;
240         X509_EXTENSION *ext;
241         int i;
242         if(ctx && (ctx->flags == CTX_TEST)) return 1;
243         if(!ctx || !ctx->issuer_cert) {
244                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
245                 goto err;
246         }
247         i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
248         if(i < 0) return 1;
249         if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
250                         !(ialt = X509V3_EXT_d2i(ext)) ) {
251                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
252                 goto err;
253         }
254
255         for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
256                 gen = sk_GENERAL_NAME_value(ialt, i);
257                 if(!sk_GENERAL_NAME_push(gens, gen)) {
258                         X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
259                         goto err;
260                 }
261         }
262         sk_GENERAL_NAME_free(ialt);
263
264         return 1;
265                 
266         err:
267         return 0;
268         
269 }
270
271 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
272                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
273 {
274         GENERAL_NAMES *gens = NULL;
275         CONF_VALUE *cnf;
276         int i;
277         if(!(gens = sk_GENERAL_NAME_new_null())) {
278                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
279                 return NULL;
280         }
281         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
282                 cnf = sk_CONF_VALUE_value(nval, i);
283                 if(!name_cmp(cnf->name, "email") && cnf->value &&
284                                                 !strcmp(cnf->value, "copy")) {
285                         if(!copy_email(ctx, gens)) goto err;
286                 } else {
287                         GENERAL_NAME *gen;
288                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
289                                                                  goto err; 
290                         sk_GENERAL_NAME_push(gens, gen);
291                 }
292         }
293         return gens;
294         err:
295         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
296         return NULL;
297 }
298
299 /* Copy any email addresses in a certificate or request to 
300  * GENERAL_NAMES
301  */
302
303 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens)
304 {
305         X509_NAME *nm;
306         ASN1_IA5STRING *email = NULL;
307         X509_NAME_ENTRY *ne;
308         GENERAL_NAME *gen = NULL;
309         int i;
310         if(ctx->flags == CTX_TEST) return 1;
311         if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
312                 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
313                 goto err;
314         }
315         /* Find the subject name */
316         if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
317         else nm = X509_REQ_get_subject_name(ctx->subject_req);
318
319         /* Now add any email address(es) to STACK */
320         i = -1;
321         while((i = X509_NAME_get_index_by_NID(nm,
322                                          NID_pkcs9_emailAddress, i)) > 0) {
323                 ne = X509_NAME_get_entry(nm, i);
324                 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
325                 if(!email || !(gen = GENERAL_NAME_new())) {
326                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
327                         goto err;
328                 }
329                 gen->d.ia5 = email;
330                 email = NULL;
331                 gen->type = GEN_EMAIL;
332                 if(!sk_GENERAL_NAME_push(gens, gen)) {
333                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
334                         goto err;
335                 }
336                 gen = NULL;
337         }
338
339         
340         return 1;
341                 
342         err:
343         GENERAL_NAME_free(gen);
344         M_ASN1_IA5STRING_free(email);
345         return 0;
346         
347 }
348
349 GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
350                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
351 {
352         GENERAL_NAME *gen;
353         GENERAL_NAMES *gens = NULL;
354         CONF_VALUE *cnf;
355         int i;
356         if(!(gens = sk_GENERAL_NAME_new_null())) {
357                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
358                 return NULL;
359         }
360         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
361                 cnf = sk_CONF_VALUE_value(nval, i);
362                 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err; 
363                 sk_GENERAL_NAME_push(gens, gen);
364         }
365         return gens;
366         err:
367         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
368         return NULL;
369 }
370
371 GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
372                                                          CONF_VALUE *cnf)
373 {
374 char is_string = 0;
375 int type;
376 GENERAL_NAME *gen = NULL;
377
378 char *name, *value;
379
380 name = cnf->name;
381 value = cnf->value;
382
383 if(!value) {
384         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_MISSING_VALUE);
385         return NULL;
386 }
387
388 if(!(gen = GENERAL_NAME_new())) {
389         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
390         return NULL;
391 }
392
393 if(!name_cmp(name, "email")) {
394         is_string = 1;
395         type = GEN_EMAIL;
396 } else if(!name_cmp(name, "URI")) {
397         is_string = 1;
398         type = GEN_URI;
399 } else if(!name_cmp(name, "DNS")) {
400         is_string = 1;
401         type = GEN_DNS;
402 } else if(!name_cmp(name, "RID")) {
403         ASN1_OBJECT *obj;
404         if(!(obj = OBJ_txt2obj(value,0))) {
405                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_OBJECT);
406                 ERR_add_error_data(2, "value=", value);
407                 goto err;
408         }
409         gen->d.rid = obj;
410         type = GEN_RID;
411 } else if(!name_cmp(name, "IP")) {
412         int i1,i2,i3,i4;
413         unsigned char ip[4];
414         if((sscanf(value, "%d.%d.%d.%d",&i1,&i2,&i3,&i4) != 4) ||
415             (i1 < 0) || (i1 > 255) || (i2 < 0) || (i2 > 255) ||
416             (i3 < 0) || (i3 > 255) || (i4 < 0) || (i4 > 255) ) {
417                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
418                 ERR_add_error_data(2, "value=", value);
419                 goto err;
420         }
421         ip[0] = i1; ip[1] = i2 ; ip[2] = i3 ; ip[3] = i4;
422         if(!(gen->d.ip = M_ASN1_OCTET_STRING_new()) ||
423                 !ASN1_STRING_set(gen->d.ip, ip, 4)) {
424                         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
425                         goto err;
426         }
427         type = GEN_IPADD;
428 } else {
429         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_OPTION);
430         ERR_add_error_data(2, "name=", name);
431         goto err;
432 }
433
434 if(is_string) {
435         if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
436                       !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
437                                        strlen(value))) {
438                 X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
439                 goto err;
440         }
441 }
442
443 gen->type = type;
444
445 return gen;
446
447 err:
448 GENERAL_NAME_free(gen);
449 return NULL;
450 }