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 "conf.h"
  62 #include "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("email",gen->d.ia5->data, &ret);
 131                 break;
 132
 133                 case GEN_DNS:
 134                 X509V3_add_value("DNS",gen->d.ia5->data, &ret);
 135                 break;
 136
 137                 case GEN_URI:
 138                 X509V3_add_value("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, value, strlen(value))) {
 396                 X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 397                 goto err;
 398         }
 399 }
 400
 401 gen->type = type;
 402
 403 return gen;
 404
 405 err:
 406 GENERAL_NAME_free(gen);
 407 return NULL;
 408 }