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