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 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
 153                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 154 {
 155         GENERAL_NAMES *gens = NULL;
 156         CONF_VALUE *cnf;
 157         int i;
 158         if(!(gens = sk_GENERAL_NAME_new_null())) {
 159                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 160                 return NULL;
 161         }
 162         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 163                 cnf = sk_CONF_VALUE_value(nval, i);
 164                 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
 165                                                 !strcmp(cnf->value, "copy")) {
 166                         if(!copy_issuer(ctx, gens)) goto err;
 167                 } else {
 168                         GENERAL_NAME *gen;
 169                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 170                                                                  goto err;
 171                         sk_GENERAL_NAME_push(gens, gen);
 172                 }
 173         }
 174         return gens;
 175         err:
 176         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 177         return NULL;
 178 }
 179
 180 /* Append subject altname of issuer to issuer alt name of subject */
 181
 182 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
 183 {
 184         GENERAL_NAMES *ialt;
 185         GENERAL_NAME *gen;
 186         X509_EXTENSION *ext;
 187         int i;
 188         if(ctx && (ctx->flags == CTX_TEST)) return 1;
 189         if(!ctx || !ctx->issuer_cert) {
 190                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
 191                 goto err;
 192         }
 193         i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
 194         if(i < 0) return 1;
 195         if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
 196                         !(ialt = X509V3_EXT_d2i(ext)) ) {
 197                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
 198                 goto err;
 199         }
 200
 201         for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
 202                 gen = sk_GENERAL_NAME_value(ialt, i);
 203                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 204                         X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
 205                         goto err;
 206                 }
 207         }
 208         sk_GENERAL_NAME_free(ialt);
 209
 210         return 1;
 211
 212         err:
 213         return 0;
 214
 215 }
 216
 217 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
 218                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 219 {
 220         GENERAL_NAMES *gens = NULL;
 221         CONF_VALUE *cnf;
 222         int i;
 223         if(!(gens = sk_GENERAL_NAME_new_null())) {
 224                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 225                 return NULL;
 226         }
 227         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 228                 cnf = sk_CONF_VALUE_value(nval, i);
 229                 if(!name_cmp(cnf->name, "email") && cnf->value &&
 230                                                 !strcmp(cnf->value, "copy")) {
 231                         if(!copy_email(ctx, gens)) goto err;
 232                 } else {
 233                         GENERAL_NAME *gen;
 234                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 235                                                                  goto err;
 236                         sk_GENERAL_NAME_push(gens, gen);
 237                 }
 238         }
 239         return gens;
 240         err:
 241         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 242         return NULL;
 243 }
 244
 245 /* Copy any email addresses in a certificate or request to
 246  * GENERAL_NAMES
 247  */
 248
 249 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens)
 250 {
 251         X509_NAME *nm;
 252         ASN1_IA5STRING *email = NULL;
 253         X509_NAME_ENTRY *ne;
 254         GENERAL_NAME *gen = NULL;
 255         int i;
 256         if(ctx->flags == CTX_TEST) return 1;
 257         if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
 258                 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
 259                 goto err;
 260         }
 261         /* Find the subject name */
 262         if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
 263         else nm = X509_REQ_get_subject_name(ctx->subject_req);
 264
 265         /* Now add any email address(es) to STACK */
 266         i = -1;
 267         while((i = X509_NAME_get_index_by_NID(nm,
 268                                          NID_pkcs9_emailAddress, i)) > 0) {
 269                 ne = X509_NAME_get_entry(nm, i);
 270                 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
 271                 if(!email || !(gen = GENERAL_NAME_new())) {
 272                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 273                         goto err;
 274                 }
 275                 gen->d.ia5 = email;
 276                 email = NULL;
 277                 gen->type = GEN_EMAIL;
 278                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 279                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 280                         goto err;
 281                 }
 282                 gen = NULL;
 283         }
 284
 285
 286         return 1;
 287
 288         err:
 289         GENERAL_NAME_free(gen);
 290         M_ASN1_IA5STRING_free(email);
 291         return 0;
 292
 293 }
 294
 295 GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
 296                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 297 {
 298         GENERAL_NAME *gen;
 299         GENERAL_NAMES *gens = NULL;
 300         CONF_VALUE *cnf;
 301         int i;
 302         if(!(gens = sk_GENERAL_NAME_new_null())) {
 303                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 304                 return NULL;
 305         }
 306         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 307                 cnf = sk_CONF_VALUE_value(nval, i);
 308                 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err;
 309                 sk_GENERAL_NAME_push(gens, gen);
 310         }
 311         return gens;
 312         err:
 313         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 314         return NULL;
 315 }
 316
 317 GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
 318                                                          CONF_VALUE *cnf)
 319 {
 320 char is_string = 0;
 321 int type;
 322 GENERAL_NAME *gen = NULL;
 323
 324 char *name, *value;
 325
 326 name = cnf->name;
 327 value = cnf->value;
 328
 329 if(!value) {
 330         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_MISSING_VALUE);
 331         return NULL;
 332 }
 333
 334 if(!(gen = GENERAL_NAME_new())) {
 335         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 336         return NULL;
 337 }
 338
 339 if(!name_cmp(name, "email")) {
 340         is_string = 1;
 341         type = GEN_EMAIL;
 342 } else if(!name_cmp(name, "URI")) {
 343         is_string = 1;
 344         type = GEN_URI;
 345 } else if(!name_cmp(name, "DNS")) {
 346         is_string = 1;
 347         type = GEN_DNS;
 348 } else if(!name_cmp(name, "RID")) {
 349         ASN1_OBJECT *obj;
 350         if(!(obj = OBJ_txt2obj(value,0))) {
 351                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_OBJECT);
 352                 ERR_add_error_data(2, "value=", value);
 353                 goto err;
 354         }
 355         gen->d.rid = obj;
 356         type = GEN_RID;
 357 } else if(!name_cmp(name, "IP")) {
 358         int i1,i2,i3,i4;
 359         unsigned char ip[4];
 360         if((sscanf(value, "%d.%d.%d.%d",&i1,&i2,&i3,&i4) != 4) ||
 361             (i1 < 0) || (i1 > 255) || (i2 < 0) || (i2 > 255) ||
 362             (i3 < 0) || (i3 > 255) || (i4 < 0) || (i4 > 255) ) {
 363                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
 364                 ERR_add_error_data(2, "value=", value);
 365                 goto err;
 366         }
 367         ip[0] = i1; ip[1] = i2 ; ip[2] = i3 ; ip[3] = i4;
 368         if(!(gen->d.ip = M_ASN1_OCTET_STRING_new()) ||
 369                 !ASN1_STRING_set(gen->d.ip, ip, 4)) {
 370                         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 371                         goto err;
 372         }
 373         type = GEN_IPADD;
 374 } else {
 375         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_OPTION);
 376         ERR_add_error_data(2, "name=", name);
 377         goto err;
 378 }
 379
 380 if(is_string) {
 381         if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
 382                       !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
 383                                        strlen(value))) {
 384                 X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 385                 goto err;
 386         }
 387 }
 388
 389 gen->type = type;
 390
 391 return gen;
 392
 393 err:
 394 GENERAL_NAME_free(gen);
 395 return NULL;
 396 }