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 }