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