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 <stdlib.h>
  61 #include <pem.h>
  62 #include <asn1_mac.h>
  63 #include <err.h>
  64 #include <objects.h>
  65 #include <conf.h>
  66 #include "x509v3.h"
  67
  68 #ifndef NOPROTO
  69 STACK *v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK *nval);
  70 STACK *v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK *nval);
  71 static int copy_email(X509V3_CTX *ctx, STACK *gens);
  72 static int copy_issuer(X509V3_CTX *ctx, STACK *gens);
  73 #else
  74 STACK *v2i_issuer_alt();
  75 STACK *v2i_subject_alt();
  76 static int copy_email();
  77 static int copy_issuer();
  78 #endif
  79
  80 X509V3_EXT_METHOD v3_alt[] = {
  81 { NID_subject_alt_name, 0,
  82 (X509V3_EXT_NEW)GENERAL_NAMES_new,
  83 GENERAL_NAMES_free,
  84 (X509V3_EXT_D2I)d2i_GENERAL_NAMES,
  85 i2d_GENERAL_NAMES,
  86 NULL, NULL,
  87 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
  88 (X509V3_EXT_V2I)v2i_subject_alt,
  89 NULL, NULL},
  90 { NID_issuer_alt_name, 0,
  91 (X509V3_EXT_NEW)GENERAL_NAMES_new,
  92 GENERAL_NAMES_free,
  93 (X509V3_EXT_D2I)d2i_GENERAL_NAMES,
  94 i2d_GENERAL_NAMES,
  95 NULL, NULL,
  96 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
  97 (X509V3_EXT_V2I)v2i_issuer_alt,
  98 NULL, NULL},
  99 EXT_END
 100 };
 101
 102 STACK *i2v_GENERAL_NAMES(method, gens, ret)
 103 X509V3_EXT_METHOD *method;
 104 STACK *gens;
 105 STACK *ret;
 106 {
 107         int i;
 108         GENERAL_NAME *gen;
 109         for(i = 0; i < sk_num(gens); i++) {
 110                 gen = (GENERAL_NAME *)sk_value(gens, i);
 111                 ret = i2v_GENERAL_NAME(method, gen, ret);
 112         }
 113         return ret;
 114 }
 115
 116 STACK *i2v_GENERAL_NAME(method, gen, ret)
 117 X509V3_EXT_METHOD *method;
 118 GENERAL_NAME *gen;
 119 STACK *ret;
 120 {
 121         char oline[256];
 122         unsigned char *p;
 123         switch (gen->type)
 124         {
 125                 case GEN_OTHERNAME:
 126                 X509V3_add_value("othername","<unsupported>", &ret);
 127                 break;
 128
 129                 case GEN_X400:
 130                 X509V3_add_value("X400Name","<unsupported>", &ret);
 131                 break;
 132
 133                 case GEN_EDIPARTY:
 134                 X509V3_add_value("EdiPartyName","<unsupported>", &ret);
 135                 break;
 136
 137                 case GEN_EMAIL:
 138                 X509V3_add_value("email",gen->d.ia5->data, &ret);
 139                 break;
 140
 141                 case GEN_DNS:
 142                 X509V3_add_value("DNS",gen->d.ia5->data, &ret);
 143                 break;
 144
 145                 case GEN_URI:
 146                 X509V3_add_value("URI",gen->d.ia5->data, &ret);
 147                 break;
 148
 149                 case GEN_DIRNAME:
 150                 X509_NAME_oneline(gen->d.dirn, oline, 256);
 151                 X509V3_add_value("DirName",oline, &ret);
 152                 break;
 153
 154                 case GEN_IPADD:
 155                 p = gen->d.ip->data;
 156                 /* BUG: doesn't support IPV6 */
 157                 if(gen->d.ip->length != 4) {
 158                         X509V3_add_value("IP Address","<invalid>", &ret);
 159                         break;
 160                 }
 161                 sprintf(oline, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
 162                 X509V3_add_value("IP Address",oline, &ret);
 163                 break;
 164
 165                 case GEN_RID:
 166                 i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
 167                 X509V3_add_value("Registered ID",oline, &ret);
 168                 break;
 169         }
 170         return ret;
 171 }
 172
 173 STACK *v2i_issuer_alt(method, ctx, nval)
 174 X509V3_EXT_METHOD *method;
 175 X509V3_CTX *ctx;
 176 STACK *nval;
 177 {
 178         STACK *gens = NULL;
 179         CONF_VALUE *cnf;
 180         int i;
 181         if(!(gens = sk_new(NULL))) {
 182                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 183                 return NULL;
 184         }
 185         for(i = 0; i < sk_num(nval); i++) {
 186                 cnf = (CONF_VALUE *)sk_value(nval, i);
 187                 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
 188                                                 !strcmp(cnf->value, "copy")) {
 189                         if(!copy_issuer(ctx, gens)) goto err;
 190                 } else {
 191                         GENERAL_NAME *gen;
 192                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 193                                                                  goto err;
 194                         sk_push(gens, (char *)gen);
 195                 }
 196         }
 197         return gens;
 198         err:
 199         sk_pop_free(gens, GENERAL_NAME_free);
 200         return NULL;
 201 }
 202
 203 /* Append subject altname of issuer to issuer alt name of subject */
 204
 205 static int copy_issuer(ctx, gens)
 206 X509V3_CTX *ctx;
 207 STACK *gens;
 208 {
 209         STACK *ialt;
 210         char *gen;
 211         X509_EXTENSION *ext;
 212         int i;
 213         if(ctx && (ctx->flags == CTX_TEST)) return 1;
 214         if(!ctx || !ctx->issuer_cert) {
 215                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
 216                 goto err;
 217         }
 218         i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
 219         if(i < 0) return 1;
 220         if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
 221                         !(ialt = (STACK *) X509V3_EXT_d2i(ext)) ) {
 222                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
 223                 goto err;
 224         }
 225
 226         for(i = 0; i < sk_num(ialt); i++) {
 227                 gen = sk_value(ialt, i);
 228                 if(!sk_push(gens, gen)) {
 229                         X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
 230                         goto err;
 231                 }
 232         }
 233         sk_free(ialt);
 234
 235         return 1;
 236
 237         err:
 238         return 0;
 239
 240 }
 241
 242 STACK *v2i_subject_alt(method, ctx, nval)
 243 X509V3_EXT_METHOD *method;
 244 X509V3_CTX *ctx;
 245 STACK *nval;
 246 {
 247         STACK *gens = NULL;
 248         CONF_VALUE *cnf;
 249         int i;
 250         if(!(gens = sk_new(NULL))) {
 251                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 252                 return NULL;
 253         }
 254         for(i = 0; i < sk_num(nval); i++) {
 255                 cnf = (CONF_VALUE *)sk_value(nval, i);
 256                 if(!name_cmp(cnf->name, "email") && cnf->value &&
 257                                                 !strcmp(cnf->value, "copy")) {
 258                         if(!copy_email(ctx, gens)) goto err;
 259                 } else {
 260                         GENERAL_NAME *gen;
 261                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 262                                                                  goto err;
 263                         sk_push(gens, (char *)gen);
 264                 }
 265         }
 266         return gens;
 267         err:
 268         sk_pop_free(gens, GENERAL_NAME_free);
 269         return NULL;
 270 }
 271
 272 /* Copy any email addresses in a certificate or request to
 273  * GENERAL_NAMES
 274  */
 275
 276 static int copy_email(ctx, gens)
 277 X509V3_CTX *ctx;
 278 STACK *gens;
 279 {
 280         X509_NAME *nm;
 281         ASN1_IA5STRING *email = NULL;
 282         X509_NAME_ENTRY *ne;
 283         GENERAL_NAME *gen = NULL;
 284         int i;
 285         if(ctx->flags == CTX_TEST) return 1;
 286         if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
 287                 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
 288                 goto err;
 289         }
 290         /* Find the subject name */
 291         if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
 292         else nm = X509_REQ_get_subject_name(ctx->subject_req);
 293
 294         /* Now add any email address(es) to STACK */
 295         i = -1;
 296         while((i = X509_NAME_get_index_by_NID(nm,
 297                                          NID_pkcs9_emailAddress, i)) > 0) {
 298                 ne = X509_NAME_get_entry(nm, i);
 299                 email = ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
 300                 if(!email || !(gen = GENERAL_NAME_new())) {
 301                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 302                         goto err;
 303                 }
 304                 gen->d.ia5 = email;
 305                 email = NULL;
 306                 gen->type = GEN_EMAIL;
 307                 if(!sk_push(gens, (char *)gen)) {
 308                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 309                         goto err;
 310                 }
 311                 gen = NULL;
 312         }
 313
 314
 315         return 1;
 316
 317         err:
 318         GENERAL_NAME_free(gen);
 319         ASN1_IA5STRING_free(email);
 320         return 0;
 321
 322 }
 323
 324 STACK *v2i_GENERAL_NAMES(method, ctx, nval)
 325 X509V3_EXT_METHOD *method;
 326 X509V3_CTX *ctx;
 327 STACK *nval;
 328 {
 329         GENERAL_NAME *gen;
 330         STACK *gens = NULL;
 331         CONF_VALUE *cnf;
 332         int i;
 333         if(!(gens = sk_new(NULL))) {
 334                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 335                 return NULL;
 336         }
 337         for(i = 0; i < sk_num(nval); i++) {
 338                 cnf = (CONF_VALUE *)sk_value(nval, i);
 339                 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err;
 340                 sk_push(gens, (char *)gen);
 341         }
 342         return gens;
 343         err:
 344         sk_pop_free(gens, GENERAL_NAME_free);
 345         return NULL;
 346 }
 347
 348 GENERAL_NAME *v2i_GENERAL_NAME(method, ctx, cnf)
 349 X509V3_EXT_METHOD *method;
 350 X509V3_CTX *ctx;
 351 CONF_VALUE *cnf;
 352 {
 353 char is_string = 0;
 354 int type;
 355 GENERAL_NAME *gen = NULL;
 356
 357 char *name, *value;
 358
 359 name = cnf->name;
 360 value = cnf->value;
 361
 362 if(!value) {
 363         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_MISSING_VALUE);
 364         return NULL;
 365 }
 366
 367 if(!(gen = GENERAL_NAME_new())) {
 368         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 369         return NULL;
 370 }
 371
 372 if(!name_cmp(name, "email")) {
 373         is_string = 1;
 374         type = GEN_EMAIL;
 375 } else if(!name_cmp(name, "URI")) {
 376         is_string = 1;
 377         type = GEN_URI;
 378 } else if(!name_cmp(name, "DNS")) {
 379         is_string = 1;
 380         type = GEN_DNS;
 381 } else if(!name_cmp(name, "RID")) {
 382         ASN1_OBJECT *obj;
 383         if(!(obj = OBJ_txt2obj(value,0))) {
 384                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_OBJECT);
 385                 ERR_add_error_data(2, "value=", value);
 386                 goto err;
 387         }
 388         gen->d.rid = obj;
 389         type = GEN_RID;
 390 } else if(!name_cmp(name, "IP")) {
 391         int i1,i2,i3,i4;
 392         unsigned char ip[4];
 393         if((sscanf(value, "%d.%d.%d.%d",&i1,&i2,&i3,&i4) != 4) ||
 394             (i1 < 0) || (i1 > 255) || (i2 < 0) || (i2 > 255) ||
 395             (i3 < 0) || (i3 > 255) || (i4 < 0) || (i4 > 255) ) {
 396                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
 397                 ERR_add_error_data(2, "value=", value);
 398                 goto err;
 399         }
 400         ip[0] = i1; ip[1] = i2 ; ip[2] = i3 ; ip[3] = i4;
 401         if(!(gen->d.ip = ASN1_OCTET_STRING_new()) ||
 402                 !ASN1_STRING_set(gen->d.ip, ip, 4)) {
 403                         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 404                         goto err;
 405         }
 406         type = GEN_IPADD;
 407 } else {
 408         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_OPTION);
 409         ERR_add_error_data(2, "name=", name);
 410         goto err;
 411 }
 412
 413 if(is_string) {
 414         if(!(gen->d.ia5 = ASN1_IA5STRING_new()) ||
 415                       !ASN1_STRING_set(gen->d.ia5, value, strlen(value))) {
 416                 X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 417                 goto err;
 418         }
 419 }
 420
 421 gen->type = type;
 422
 423 return gen;
 424
 425 err:
 426 GENERAL_NAME_free(gen);
 427 return NULL;
 428 }