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