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) 1999-2002 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, int move_p);
  67 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
  68 static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
  69
  70 X509V3_EXT_METHOD v3_alt[] = {
  71 { NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
  72 0,0,0,0,
  73 0,0,
  74 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
  75 (X509V3_EXT_V2I)v2i_subject_alt,
  76 NULL, NULL, NULL},
  77
  78 { NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
  79 0,0,0,0,
  80 0,0,
  81 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
  82 (X509V3_EXT_V2I)v2i_issuer_alt,
  83 NULL, NULL, NULL},
  84 };
  85
  86 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
  87                 GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret)
  88 {
  89         int i;
  90         GENERAL_NAME *gen;
  91         for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
  92                 gen = sk_GENERAL_NAME_value(gens, i);
  93                 ret = i2v_GENERAL_NAME(method, gen, ret);
  94         }
  95         if(!ret) return sk_CONF_VALUE_new_null();
  96         return ret;
  97 }
  98
  99 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
 100                                 GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret)
 101 {
 102         unsigned char *p;
 103         char oline[256];
 104         switch (gen->type)
 105         {
 106                 case GEN_OTHERNAME:
 107                 X509V3_add_value("othername","<unsupported>", &ret);
 108                 break;
 109
 110                 case GEN_X400:
 111                 X509V3_add_value("X400Name","<unsupported>", &ret);
 112                 break;
 113
 114                 case GEN_EDIPARTY:
 115                 X509V3_add_value("EdiPartyName","<unsupported>", &ret);
 116                 break;
 117
 118                 case GEN_EMAIL:
 119                 X509V3_add_value_uchar("email",gen->d.ia5->data, &ret);
 120                 break;
 121
 122                 case GEN_DNS:
 123                 X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret);
 124                 break;
 125
 126                 case GEN_URI:
 127                 X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret);
 128                 break;
 129
 130                 case GEN_DIRNAME:
 131                 X509_NAME_oneline(gen->d.dirn, oline, 256);
 132                 X509V3_add_value("DirName",oline, &ret);
 133                 break;
 134
 135                 case GEN_IPADD:
 136                 p = gen->d.ip->data;
 137                 /* BUG: doesn't support IPV6 */
 138                 if(gen->d.ip->length != 4) {
 139                         X509V3_add_value("IP Address","<invalid>", &ret);
 140                         break;
 141                 }
 142                 sprintf(oline, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
 143                 X509V3_add_value("IP Address",oline, &ret);
 144                 break;
 145
 146                 case GEN_RID:
 147                 i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
 148                 X509V3_add_value("Registered ID",oline, &ret);
 149                 break;
 150         }
 151         return ret;
 152 }
 153
 154 int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
 155 {
 156         unsigned char *p;
 157         switch (gen->type)
 158         {
 159                 case GEN_OTHERNAME:
 160                 BIO_printf(out, "othername:<unsupported>");
 161                 break;
 162
 163                 case GEN_X400:
 164                 BIO_printf(out, "X400Name:<unsupported>");
 165                 break;
 166
 167                 case GEN_EDIPARTY:
 168                 /* Maybe fix this: it is supported now */
 169                 BIO_printf(out, "EdiPartyName:<unsupported>");
 170                 break;
 171
 172                 case GEN_EMAIL:
 173                 BIO_printf(out, "email:%s",gen->d.ia5->data);
 174                 break;
 175
 176                 case GEN_DNS:
 177                 BIO_printf(out, "DNS:%s",gen->d.ia5->data);
 178                 break;
 179
 180                 case GEN_URI:
 181                 BIO_printf(out, "URI:%s",gen->d.ia5->data);
 182                 break;
 183
 184                 case GEN_DIRNAME:
 185                 BIO_printf(out, "DirName: ");
 186                 X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
 187                 break;
 188
 189                 case GEN_IPADD:
 190                 p = gen->d.ip->data;
 191                 /* BUG: doesn't support IPV6 */
 192                 if(gen->d.ip->length != 4) {
 193                         BIO_printf(out,"IP Address:<invalid>");
 194                         break;
 195                 }
 196                 BIO_printf(out, "IP Address:%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
 197                 break;
 198
 199                 case GEN_RID:
 200                 BIO_printf(out, "Registered ID");
 201                 i2a_ASN1_OBJECT(out, gen->d.rid);
 202                 break;
 203         }
 204         return 1;
 205 }
 206
 207 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
 208                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 209 {
 210         GENERAL_NAMES *gens = NULL;
 211         CONF_VALUE *cnf;
 212         int i;
 213         if(!(gens = sk_GENERAL_NAME_new_null())) {
 214                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 215                 return NULL;
 216         }
 217         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 218                 cnf = sk_CONF_VALUE_value(nval, i);
 219                 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
 220                                                 !strcmp(cnf->value, "copy")) {
 221                         if(!copy_issuer(ctx, gens)) goto err;
 222                 } else {
 223                         GENERAL_NAME *gen;
 224                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 225                                                                  goto err;
 226                         sk_GENERAL_NAME_push(gens, gen);
 227                 }
 228         }
 229         return gens;
 230         err:
 231         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 232         return NULL;
 233 }
 234
 235 /* Append subject altname of issuer to issuer alt name of subject */
 236
 237 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
 238 {
 239         GENERAL_NAMES *ialt;
 240         GENERAL_NAME *gen;
 241         X509_EXTENSION *ext;
 242         int i;
 243         if(ctx && (ctx->flags == CTX_TEST)) return 1;
 244         if(!ctx || !ctx->issuer_cert) {
 245                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
 246                 goto err;
 247         }
 248         i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
 249         if(i < 0) return 1;
 250         if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
 251                         !(ialt = X509V3_EXT_d2i(ext)) ) {
 252                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
 253                 goto err;
 254         }
 255
 256         for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
 257                 gen = sk_GENERAL_NAME_value(ialt, i);
 258                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 259                         X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
 260                         goto err;
 261                 }
 262         }
 263         sk_GENERAL_NAME_free(ialt);
 264
 265         return 1;
 266
 267         err:
 268         return 0;
 269
 270 }
 271
 272 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
 273                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 274 {
 275         GENERAL_NAMES *gens = NULL;
 276         CONF_VALUE *cnf;
 277         int i;
 278         if(!(gens = sk_GENERAL_NAME_new_null())) {
 279                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 280                 return NULL;
 281         }
 282         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 283                 cnf = sk_CONF_VALUE_value(nval, i);
 284                 if(!name_cmp(cnf->name, "email") && cnf->value &&
 285                                                 !strcmp(cnf->value, "copy")) {
 286                         if(!copy_email(ctx, gens, 0)) goto err;
 287                 } else if(!name_cmp(cnf->name, "email") && cnf->value &&
 288                                                 !strcmp(cnf->value, "move")) {
 289                         if(!copy_email(ctx, gens, 1)) goto err;
 290                 } else {
 291                         GENERAL_NAME *gen;
 292                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 293                                                                  goto err;
 294                         sk_GENERAL_NAME_push(gens, gen);
 295                 }
 296         }
 297         return gens;
 298         err:
 299         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 300         return NULL;
 301 }
 302
 303 /* Copy any email addresses in a certificate or request to
 304  * GENERAL_NAMES
 305  */
 306
 307 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
 308 {
 309         X509_NAME *nm;
 310         ASN1_IA5STRING *email = NULL;
 311         X509_NAME_ENTRY *ne;
 312         GENERAL_NAME *gen = NULL;
 313         int i;
 314         if(ctx->flags == CTX_TEST) return 1;
 315         if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
 316                 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
 317                 goto err;
 318         }
 319         /* Find the subject name */
 320         if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
 321         else nm = X509_REQ_get_subject_name(ctx->subject_req);
 322
 323         /* Now add any email address(es) to STACK */
 324         i = -1;
 325         while((i = X509_NAME_get_index_by_NID(nm,
 326                                          NID_pkcs9_emailAddress, i)) >= 0) {
 327                 ne = X509_NAME_get_entry(nm, i);
 328                 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
 329                 if (move_p)
 330                         {
 331                         X509_NAME_delete_entry(nm, i);
 332                         i--;
 333                         }
 334                 if(!email || !(gen = GENERAL_NAME_new())) {
 335                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 336                         goto err;
 337                 }
 338                 gen->d.ia5 = email;
 339                 email = NULL;
 340                 gen->type = GEN_EMAIL;
 341                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 342                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 343                         goto err;
 344                 }
 345                 gen = NULL;
 346         }
 347
 348
 349         return 1;
 350
 351         err:
 352         GENERAL_NAME_free(gen);
 353         M_ASN1_IA5STRING_free(email);
 354         return 0;
 355
 356 }
 357
 358 GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
 359                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 360 {
 361         GENERAL_NAME *gen;
 362         GENERAL_NAMES *gens = NULL;
 363         CONF_VALUE *cnf;
 364         int i;
 365         if(!(gens = sk_GENERAL_NAME_new_null())) {
 366                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 367                 return NULL;
 368         }
 369         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 370                 cnf = sk_CONF_VALUE_value(nval, i);
 371                 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err;
 372                 sk_GENERAL_NAME_push(gens, gen);
 373         }
 374         return gens;
 375         err:
 376         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 377         return NULL;
 378 }
 379
 380 GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
 381                                                          CONF_VALUE *cnf)
 382 {
 383 char is_string = 0;
 384 int type;
 385 GENERAL_NAME *gen = NULL;
 386
 387 char *name, *value;
 388
 389 name = cnf->name;
 390 value = cnf->value;
 391
 392 if(!value) {
 393         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_MISSING_VALUE);
 394         return NULL;
 395 }
 396
 397 if(!(gen = GENERAL_NAME_new())) {
 398         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 399         return NULL;
 400 }
 401
 402 if(!name_cmp(name, "email")) {
 403         is_string = 1;
 404         type = GEN_EMAIL;
 405 } else if(!name_cmp(name, "URI")) {
 406         is_string = 1;
 407         type = GEN_URI;
 408 } else if(!name_cmp(name, "DNS")) {
 409         is_string = 1;
 410         type = GEN_DNS;
 411 } else if(!name_cmp(name, "RID")) {
 412         ASN1_OBJECT *obj;
 413         if(!(obj = OBJ_txt2obj(value,0))) {
 414                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_OBJECT);
 415                 ERR_add_error_data(2, "value=", value);
 416                 goto err;
 417         }
 418         gen->d.rid = obj;
 419         type = GEN_RID;
 420 } else if(!name_cmp(name, "IP")) {
 421         int i1,i2,i3,i4;
 422         unsigned char ip[4];
 423         if((sscanf(value, "%d.%d.%d.%d",&i1,&i2,&i3,&i4) != 4) ||
 424             (i1 < 0) || (i1 > 255) || (i2 < 0) || (i2 > 255) ||
 425             (i3 < 0) || (i3 > 255) || (i4 < 0) || (i4 > 255) ) {
 426                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
 427                 ERR_add_error_data(2, "value=", value);
 428                 goto err;
 429         }
 430         ip[0] = i1; ip[1] = i2 ; ip[2] = i3 ; ip[3] = i4;
 431         if(!(gen->d.ip = M_ASN1_OCTET_STRING_new()) ||
 432                 !ASN1_STRING_set(gen->d.ip, ip, 4)) {
 433                         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 434                         goto err;
 435         }
 436         type = GEN_IPADD;
 437 } else if(!name_cmp(name, "otherName")) {
 438         if (!do_othername(gen, value, ctx))
 439                 {
 440                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_OTHERNAME_ERROR);
 441                 goto err;
 442                 }
 443         type = GEN_OTHERNAME;
 444 } else {
 445         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_OPTION);
 446         ERR_add_error_data(2, "name=", name);
 447         goto err;
 448 }
 449
 450 if(is_string) {
 451         if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
 452                       !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
 453                                        strlen(value))) {
 454                 X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 455                 goto err;
 456         }
 457 }
 458
 459 gen->type = type;
 460
 461 return gen;
 462
 463 err:
 464 GENERAL_NAME_free(gen);
 465 return NULL;
 466 }
 467
 468 static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
 469         {
 470         char *objtmp = NULL, *p;
 471         int objlen;
 472         if (!(p = strchr(value, ';')))
 473                 return 0;
 474         if (!(gen->d.otherName = OTHERNAME_new()))
 475                 return 0;
 476         /* Free this up because we will overwrite it.
 477          * no need to free type_id because it is static
 478          */
 479         ASN1_TYPE_free(gen->d.otherName->value);
 480         if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))
 481                 return 0;
 482         objlen = p - value;
 483         objtmp = OPENSSL_malloc(objlen + 1);
 484         strncpy(objtmp, value, objlen);
 485         objtmp[objlen] = 0;
 486         gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
 487         OPENSSL_free(objtmp);
 488         if (!gen->d.otherName->type_id)
 489                 return 0;
 490         return 1;
 491         }