0fc5c1fb131d5b231fea2e820eb12bf016fd0847
[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, ASN1_ITEM_ref(GENERAL_NAMES),
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, ASN1_ITEM_ref(GENERAL_NAMES),
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         unsigned char *p;
101         char oline[256];
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         unsigned char *p;
155         switch (gen->type)
156         {
157                 case GEN_OTHERNAME:
158                 BIO_printf(out, "othername:<unsupported>");
159                 break;
160
161                 case GEN_X400:
162                 BIO_printf(out, "X400Name:<unsupported>");
163                 break;
164
165                 case GEN_EDIPARTY:
166                 /* Maybe fix this: it is supported now */
167                 BIO_printf(out, "EdiPartyName:<unsupported>");
168                 break;
169
170                 case GEN_EMAIL:
171                 BIO_printf(out, "email:%s",gen->d.ia5->data);
172                 break;
173
174                 case GEN_DNS:
175                 BIO_printf(out, "DNS:%s",gen->d.ia5->data);
176                 break;
177
178                 case GEN_URI:
179                 BIO_printf(out, "URI:%s",gen->d.ia5->data);
180                 break;
181
182                 case GEN_DIRNAME:
183                 BIO_printf(out, "DirName: ");
184                 X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
185                 break;
186
187                 case GEN_IPADD:
188                 p = gen->d.ip->data;
189                 /* BUG: doesn't support IPV6 */
190                 if(gen->d.ip->length != 4) {
191                         BIO_printf(out,"IP Address:<invalid>");
192                         break;
193                 }
194                 BIO_printf(out, "IP Address:%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
195                 break;
196
197                 case GEN_RID:
198                 BIO_printf(out, "Registered ID");
199                 i2a_ASN1_OBJECT(out, gen->d.rid);
200                 break;
201         }
202         return 1;
203 }
204
205 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
206                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
207 {
208         GENERAL_NAMES *gens = NULL;
209         CONF_VALUE *cnf;
210         int i;
211         if(!(gens = sk_GENERAL_NAME_new_null())) {
212                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
213                 return NULL;
214         }
215         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
216                 cnf = sk_CONF_VALUE_value(nval, i);
217                 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
218                                                 !strcmp(cnf->value, "copy")) {
219                         if(!copy_issuer(ctx, gens)) goto err;
220                 } else {
221                         GENERAL_NAME *gen;
222                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
223                                                                  goto err; 
224                         sk_GENERAL_NAME_push(gens, gen);
225                 }
226         }
227         return gens;
228         err:
229         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
230         return NULL;
231 }
232
233 /* Append subject altname of issuer to issuer alt name of subject */
234
235 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
236 {
237         GENERAL_NAMES *ialt;
238         GENERAL_NAME *gen;
239         X509_EXTENSION *ext;
240         int i;
241         if(ctx && (ctx->flags == CTX_TEST)) return 1;
242         if(!ctx || !ctx->issuer_cert) {
243                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
244                 goto err;
245         }
246         i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
247         if(i < 0) return 1;
248         if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
249                         !(ialt = X509V3_EXT_d2i(ext)) ) {
250                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
251                 goto err;
252         }
253
254         for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
255                 gen = sk_GENERAL_NAME_value(ialt, i);
256                 if(!sk_GENERAL_NAME_push(gens, gen)) {
257                         X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
258                         goto err;
259                 }
260         }
261         sk_GENERAL_NAME_free(ialt);
262
263         return 1;
264                 
265         err:
266         return 0;
267         
268 }
269
270 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
271                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
272 {
273         GENERAL_NAMES *gens = NULL;
274         CONF_VALUE *cnf;
275         int i;
276         if(!(gens = sk_GENERAL_NAME_new_null())) {
277                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
278                 return NULL;
279         }
280         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
281                 cnf = sk_CONF_VALUE_value(nval, i);
282                 if(!name_cmp(cnf->name, "email") && cnf->value &&
283                                                 !strcmp(cnf->value, "copy")) {
284                         if(!copy_email(ctx, gens)) goto err;
285                 } else {
286                         GENERAL_NAME *gen;
287                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
288                                                                  goto err; 
289                         sk_GENERAL_NAME_push(gens, gen);
290                 }
291         }
292         return gens;
293         err:
294         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
295         return NULL;
296 }
297
298 /* Copy any email addresses in a certificate or request to 
299  * GENERAL_NAMES
300  */
301
302 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens)
303 {
304         X509_NAME *nm;
305         ASN1_IA5STRING *email = NULL;
306         X509_NAME_ENTRY *ne;
307         GENERAL_NAME *gen = NULL;
308         int i;
309         if(ctx->flags == CTX_TEST) return 1;
310         if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
311                 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
312                 goto err;
313         }
314         /* Find the subject name */
315         if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
316         else nm = X509_REQ_get_subject_name(ctx->subject_req);
317
318         /* Now add any email address(es) to STACK */
319         i = -1;
320         while((i = X509_NAME_get_index_by_NID(nm,
321                                          NID_pkcs9_emailAddress, i)) >= 0) {
322                 ne = X509_NAME_get_entry(nm, i);
323                 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
324                 if(!email || !(gen = GENERAL_NAME_new())) {
325                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
326                         goto err;
327                 }
328                 gen->d.ia5 = email;
329                 email = NULL;
330                 gen->type = GEN_EMAIL;
331                 if(!sk_GENERAL_NAME_push(gens, gen)) {
332                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
333                         goto err;
334                 }
335                 gen = NULL;
336         }
337
338         
339         return 1;
340                 
341         err:
342         GENERAL_NAME_free(gen);
343         M_ASN1_IA5STRING_free(email);
344         return 0;
345         
346 }
347
348 GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
349                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
350 {
351         GENERAL_NAME *gen;
352         GENERAL_NAMES *gens = NULL;
353         CONF_VALUE *cnf;
354         int i;
355         if(!(gens = sk_GENERAL_NAME_new_null())) {
356                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
357                 return NULL;
358         }
359         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
360                 cnf = sk_CONF_VALUE_value(nval, i);
361                 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err; 
362                 sk_GENERAL_NAME_push(gens, gen);
363         }
364         return gens;
365         err:
366         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
367         return NULL;
368 }
369
370 GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
371                                                          CONF_VALUE *cnf)
372 {
373 char is_string = 0;
374 int type;
375 GENERAL_NAME *gen = NULL;
376
377 char *name, *value;
378
379 name = cnf->name;
380 value = cnf->value;
381
382 if(!value) {
383         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_MISSING_VALUE);
384         return NULL;
385 }
386
387 if(!(gen = GENERAL_NAME_new())) {
388         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
389         return NULL;
390 }
391
392 if(!name_cmp(name, "email")) {
393         is_string = 1;
394         type = GEN_EMAIL;
395 } else if(!name_cmp(name, "URI")) {
396         is_string = 1;
397         type = GEN_URI;
398 } else if(!name_cmp(name, "DNS")) {
399         is_string = 1;
400         type = GEN_DNS;
401 } else if(!name_cmp(name, "RID")) {
402         ASN1_OBJECT *obj;
403         if(!(obj = OBJ_txt2obj(value,0))) {
404                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_OBJECT);
405                 ERR_add_error_data(2, "value=", value);
406                 goto err;
407         }
408         gen->d.rid = obj;
409         type = GEN_RID;
410 } else if(!name_cmp(name, "IP")) {
411         int i1,i2,i3,i4;
412         unsigned char ip[4];
413         if((sscanf(value, "%d.%d.%d.%d",&i1,&i2,&i3,&i4) != 4) ||
414             (i1 < 0) || (i1 > 255) || (i2 < 0) || (i2 > 255) ||
415             (i3 < 0) || (i3 > 255) || (i4 < 0) || (i4 > 255) ) {
416                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
417                 ERR_add_error_data(2, "value=", value);
418                 goto err;
419         }
420         ip[0] = i1; ip[1] = i2 ; ip[2] = i3 ; ip[3] = i4;
421         if(!(gen->d.ip = M_ASN1_OCTET_STRING_new()) ||
422                 !ASN1_STRING_set(gen->d.ip, ip, 4)) {
423                         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
424                         goto err;
425         }
426         type = GEN_IPADD;
427 } else {
428         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_OPTION);
429         ERR_add_error_data(2, "name=", name);
430         goto err;
431 }
432
433 if(is_string) {
434         if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
435                       !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
436                                        strlen(value))) {
437                 X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
438                 goto err;
439         }
440 }
441
442 gen->type = type;
443
444 return gen;
445
446 err:
447 GENERAL_NAME_free(gen);
448 return NULL;
449 }