efe9e5ee325f314927d99ec54d8ca1df2a5a27c1
[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 #ifndef NOPROTO
65 static STACK_OF(GENERAL_NAME) *v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK *nval);
66 static STACK_OF(GENERAL_NAME) *v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK *nval);
67 static int copy_email(X509V3_CTX *ctx, STACK_OF(GENERAL_NAME) *gens);
68 static int copy_issuer(X509V3_CTX *ctx, STACK_OF(GENERAL_NAME) *gens);
69 #else
70 static STACK *v2i_issuer_alt();
71 static STACK *v2i_subject_alt();
72 static int copy_email();
73 static int copy_issuer();
74 #endif
75
76 X509V3_EXT_METHOD v3_alt[] = {
77 { NID_subject_alt_name, 0,
78 (X509V3_EXT_NEW)GENERAL_NAMES_new,
79 GENERAL_NAMES_free,
80 (X509V3_EXT_D2I)d2i_GENERAL_NAMES,
81 i2d_GENERAL_NAMES,
82 NULL, NULL,
83 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
84 (X509V3_EXT_V2I)v2i_subject_alt,
85 NULL, NULL, NULL},
86 { NID_issuer_alt_name, 0,
87 (X509V3_EXT_NEW)GENERAL_NAMES_new,
88 GENERAL_NAMES_free,
89 (X509V3_EXT_D2I)d2i_GENERAL_NAMES,
90 i2d_GENERAL_NAMES,
91 NULL, NULL,
92 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
93 (X509V3_EXT_V2I)v2i_issuer_alt,
94 NULL, NULL, NULL},
95 EXT_END
96 };
97
98 STACK *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
99                                  STACK_OF(GENERAL_NAME) *gens, STACK *ret)
100 {
101         int i;
102         GENERAL_NAME *gen;
103         for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
104                 gen = sk_GENERAL_NAME_value(gens, i);
105                 ret = i2v_GENERAL_NAME(method, gen, ret);
106         }
107         return ret;
108 }
109
110 STACK *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method, GENERAL_NAME *gen,
111                                                                  STACK *ret)
112 {
113         char oline[256];
114         unsigned char *p;
115         switch (gen->type)
116         {
117                 case GEN_OTHERNAME:
118                 X509V3_add_value("othername","<unsupported>", &ret);
119                 break;
120
121                 case GEN_X400:
122                 X509V3_add_value("X400Name","<unsupported>", &ret);
123                 break;
124
125                 case GEN_EDIPARTY:
126                 X509V3_add_value("EdiPartyName","<unsupported>", &ret);
127                 break;
128
129                 case GEN_EMAIL:
130                 X509V3_add_value_uchar("email",gen->d.ia5->data, &ret);
131                 break;
132
133                 case GEN_DNS:
134                 X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret);
135                 break;
136
137                 case GEN_URI:
138                 X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret);
139                 break;
140
141                 case GEN_DIRNAME:
142                 X509_NAME_oneline(gen->d.dirn, oline, 256);
143                 X509V3_add_value("DirName",oline, &ret);
144                 break;
145
146                 case GEN_IPADD:
147                 p = gen->d.ip->data;
148                 /* BUG: doesn't support IPV6 */
149                 if(gen->d.ip->length != 4) {
150                         X509V3_add_value("IP Address","<invalid>", &ret);
151                         break;
152                 }
153                 sprintf(oline, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
154                 X509V3_add_value("IP Address",oline, &ret);
155                 break;
156
157                 case GEN_RID:
158                 i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
159                 X509V3_add_value("Registered ID",oline, &ret);
160                 break;
161         }
162         return ret;
163 }
164
165 static STACK_OF(GENERAL_NAME) *v2i_issuer_alt(X509V3_EXT_METHOD *method,
166                                                  X509V3_CTX *ctx, STACK *nval)
167 {
168         STACK_OF(GENERAL_NAME) *gens = NULL;
169         CONF_VALUE *cnf;
170         int i;
171         if(!(gens = sk_GENERAL_NAME_new(NULL))) {
172                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
173                 return NULL;
174         }
175         for(i = 0; i < sk_num(nval); i++) {
176                 cnf = (CONF_VALUE *)sk_value(nval, i);
177                 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
178                                                 !strcmp(cnf->value, "copy")) {
179                         if(!copy_issuer(ctx, gens)) goto err;
180                 } else {
181                         GENERAL_NAME *gen;
182                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
183                                                                  goto err; 
184                         sk_GENERAL_NAME_push(gens, gen);
185                 }
186         }
187         return gens;
188         err:
189         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
190         return NULL;
191 }
192
193 /* Append subject altname of issuer to issuer alt name of subject */
194
195 static int copy_issuer(X509V3_CTX *ctx, STACK_OF(GENERAL_NAME) *gens)
196 {
197         STACK_OF(GENERAL_NAME) *ialt;
198         GENERAL_NAME *gen;
199         X509_EXTENSION *ext;
200         int i;
201         if(ctx && (ctx->flags == CTX_TEST)) return 1;
202         if(!ctx || !ctx->issuer_cert) {
203                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
204                 goto err;
205         }
206         i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
207         if(i < 0) return 1;
208         if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
209                         !(ialt = X509V3_EXT_d2i(ext)) ) {
210                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
211                 goto err;
212         }
213
214         for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
215                 gen = sk_GENERAL_NAME_value(ialt, i);
216                 if(!sk_GENERAL_NAME_push(gens, gen)) {
217                         X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
218                         goto err;
219                 }
220         }
221         sk_GENERAL_NAME_free(ialt);
222
223         return 1;
224                 
225         err:
226         return 0;
227         
228 }
229
230 static STACK_OF(GENERAL_NAME) *v2i_subject_alt(X509V3_EXT_METHOD *method,
231                                                  X509V3_CTX *ctx, STACK *nval)
232 {
233         STACK_OF(GENERAL_NAME) *gens = NULL;
234         CONF_VALUE *cnf;
235         int i;
236         if(!(gens = sk_GENERAL_NAME_new(NULL))) {
237                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
238                 return NULL;
239         }
240         for(i = 0; i < sk_num(nval); i++) {
241                 cnf = (CONF_VALUE *)sk_value(nval, i);
242                 if(!name_cmp(cnf->name, "email") && cnf->value &&
243                                                 !strcmp(cnf->value, "copy")) {
244                         if(!copy_email(ctx, gens)) goto err;
245                 } else {
246                         GENERAL_NAME *gen;
247                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
248                                                                  goto err; 
249                         sk_GENERAL_NAME_push(gens, gen);
250                 }
251         }
252         return gens;
253         err:
254         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
255         return NULL;
256 }
257
258 /* Copy any email addresses in a certificate or request to 
259  * GENERAL_NAMES
260  */
261
262 static int copy_email(X509V3_CTX *ctx, STACK_OF(GENERAL_NAME) *gens)
263 {
264         X509_NAME *nm;
265         ASN1_IA5STRING *email = NULL;
266         X509_NAME_ENTRY *ne;
267         GENERAL_NAME *gen = NULL;
268         int i;
269         if(ctx->flags == CTX_TEST) return 1;
270         if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
271                 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
272                 goto err;
273         }
274         /* Find the subject name */
275         if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
276         else nm = X509_REQ_get_subject_name(ctx->subject_req);
277
278         /* Now add any email address(es) to STACK */
279         i = -1;
280         while((i = X509_NAME_get_index_by_NID(nm,
281                                          NID_pkcs9_emailAddress, i)) > 0) {
282                 ne = X509_NAME_get_entry(nm, i);
283                 email = ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
284                 if(!email || !(gen = GENERAL_NAME_new())) {
285                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
286                         goto err;
287                 }
288                 gen->d.ia5 = email;
289                 email = NULL;
290                 gen->type = GEN_EMAIL;
291                 if(!sk_GENERAL_NAME_push(gens, gen)) {
292                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
293                         goto err;
294                 }
295                 gen = NULL;
296         }
297
298         
299         return 1;
300                 
301         err:
302         GENERAL_NAME_free(gen);
303         ASN1_IA5STRING_free(email);
304         return 0;
305         
306 }
307
308 STACK_OF(GENERAL_NAME) *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
309                                                  X509V3_CTX *ctx, STACK *nval)
310 {
311         GENERAL_NAME *gen;
312         STACK_OF(GENERAL_NAME) *gens = NULL;
313         CONF_VALUE *cnf;
314         int i;
315         if(!(gens = sk_GENERAL_NAME_new(NULL))) {
316                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
317                 return NULL;
318         }
319         for(i = 0; i < sk_num(nval); i++) {
320                 cnf = (CONF_VALUE *)sk_value(nval, i);
321                 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err; 
322                 sk_GENERAL_NAME_push(gens, gen);
323         }
324         return gens;
325         err:
326         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
327         return NULL;
328 }
329
330 GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
331                                                          CONF_VALUE *cnf)
332 {
333 char is_string = 0;
334 int type;
335 GENERAL_NAME *gen = NULL;
336
337 char *name, *value;
338
339 name = cnf->name;
340 value = cnf->value;
341
342 if(!value) {
343         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_MISSING_VALUE);
344         return NULL;
345 }
346
347 if(!(gen = GENERAL_NAME_new())) {
348         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
349         return NULL;
350 }
351
352 if(!name_cmp(name, "email")) {
353         is_string = 1;
354         type = GEN_EMAIL;
355 } else if(!name_cmp(name, "URI")) {
356         is_string = 1;
357         type = GEN_URI;
358 } else if(!name_cmp(name, "DNS")) {
359         is_string = 1;
360         type = GEN_DNS;
361 } else if(!name_cmp(name, "RID")) {
362         ASN1_OBJECT *obj;
363         if(!(obj = OBJ_txt2obj(value,0))) {
364                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_OBJECT);
365                 ERR_add_error_data(2, "value=", value);
366                 goto err;
367         }
368         gen->d.rid = obj;
369         type = GEN_RID;
370 } else if(!name_cmp(name, "IP")) {
371         int i1,i2,i3,i4;
372         unsigned char ip[4];
373         if((sscanf(value, "%d.%d.%d.%d",&i1,&i2,&i3,&i4) != 4) ||
374             (i1 < 0) || (i1 > 255) || (i2 < 0) || (i2 > 255) ||
375             (i3 < 0) || (i3 > 255) || (i4 < 0) || (i4 > 255) ) {
376                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
377                 ERR_add_error_data(2, "value=", value);
378                 goto err;
379         }
380         ip[0] = i1; ip[1] = i2 ; ip[2] = i3 ; ip[3] = i4;
381         if(!(gen->d.ip = ASN1_OCTET_STRING_new()) ||
382                 !ASN1_STRING_set(gen->d.ip, ip, 4)) {
383                         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
384                         goto err;
385         }
386         type = GEN_IPADD;
387 } else {
388         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_OPTION);
389         ERR_add_error_data(2, "name=", name);
390         goto err;
391 }
392
393 if(is_string) {
394         if(!(gen->d.ia5 = ASN1_IA5STRING_new()) ||
395                       !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
396                                        strlen(value))) {
397                 X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
398                 goto err;
399         }
400 }
401
402 gen->type = type;
403
404 return gen;
405
406 err:
407 GENERAL_NAME_free(gen);
408 return NULL;
409 }