crypto/x509v3/v3_alt.c

   1 /* v3_alt.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999-2003 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 GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
  65 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
  66 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
  67 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
  68 static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
  69
  70 X509V3_EXT_METHOD v3_alt[] = {
  71 { NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
  72 0,0,0,0,
  73 0,0,
  74 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
  75 (X509V3_EXT_V2I)v2i_subject_alt,
  76 NULL, NULL, NULL},
  77
  78 { NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
  79 0,0,0,0,
  80 0,0,
  81 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
  82 (X509V3_EXT_V2I)v2i_issuer_alt,
  83 NULL, NULL, NULL},
  84 };
  85
  86 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
  87                 GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret)
  88 {
  89         int i;
  90         GENERAL_NAME *gen;
  91         for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
  92                 gen = sk_GENERAL_NAME_value(gens, i);
  93                 ret = i2v_GENERAL_NAME(method, gen, ret);
  94         }
  95         if(!ret) return sk_CONF_VALUE_new_null();
  96         return ret;
  97 }
  98
  99 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
 100                                 GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret)
 101 {
 102         unsigned char *p;
 103         char oline[256], htmp[5];
 104         int i;
 105         switch (gen->type)
 106         {
 107                 case GEN_OTHERNAME:
 108                 X509V3_add_value("othername","<unsupported>", &ret);
 109                 break;
 110
 111                 case GEN_X400:
 112                 X509V3_add_value("X400Name","<unsupported>", &ret);
 113                 break;
 114
 115                 case GEN_EDIPARTY:
 116                 X509V3_add_value("EdiPartyName","<unsupported>", &ret);
 117                 break;
 118
 119                 case GEN_EMAIL:
 120                 X509V3_add_value_uchar("email",gen->d.ia5->data, &ret);
 121                 break;
 122
 123                 case GEN_DNS:
 124                 X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret);
 125                 break;
 126
 127                 case GEN_URI:
 128                 X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret);
 129                 break;
 130
 131                 case GEN_DIRNAME:
 132                 X509_NAME_oneline(gen->d.dirn, oline, 256);
 133                 X509V3_add_value("DirName",oline, &ret);
 134                 break;
 135
 136                 case GEN_IPADD:
 137                 p = gen->d.ip->data;
 138                 if(gen->d.ip->length == 4)
 139                         sprintf(oline, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
 140                 else if(gen->d.ip->length == 16)
 141                         {
 142                         oline[0] = 0;
 143                         for (i = 0; i < 8; i++)
 144                                 {
 145                                 sprintf(htmp, "%X", p[0] << 8 | p[1]);
 146                                 p += 2;
 147                                 strcat(oline, htmp);
 148                                 if (i != 7)
 149                                         strcat(oline, ":");
 150                                 }
 151                         }
 152                 else
 153                         {
 154                         X509V3_add_value("IP Address","<invalid>", &ret);
 155                         break;
 156                         }
 157                 X509V3_add_value("IP Address",oline, &ret);
 158                 break;
 159
 160                 case GEN_RID:
 161                 i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
 162                 X509V3_add_value("Registered ID",oline, &ret);
 163                 break;
 164         }
 165         return ret;
 166 }
 167
 168 int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
 169 {
 170         unsigned char *p;
 171         int i;
 172         switch (gen->type)
 173         {
 174                 case GEN_OTHERNAME:
 175                 BIO_printf(out, "othername:<unsupported>");
 176                 break;
 177
 178                 case GEN_X400:
 179                 BIO_printf(out, "X400Name:<unsupported>");
 180                 break;
 181
 182                 case GEN_EDIPARTY:
 183                 /* Maybe fix this: it is supported now */
 184                 BIO_printf(out, "EdiPartyName:<unsupported>");
 185                 break;
 186
 187                 case GEN_EMAIL:
 188                 BIO_printf(out, "email:%s",gen->d.ia5->data);
 189                 break;
 190
 191                 case GEN_DNS:
 192                 BIO_printf(out, "DNS:%s",gen->d.ia5->data);
 193                 break;
 194
 195                 case GEN_URI:
 196                 BIO_printf(out, "URI:%s",gen->d.ia5->data);
 197                 break;
 198
 199                 case GEN_DIRNAME:
 200                 BIO_printf(out, "DirName: ");
 201                 X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
 202                 break;
 203
 204                 case GEN_IPADD:
 205                 p = gen->d.ip->data;
 206                 if(gen->d.ip->length == 4)
 207                         BIO_printf(out, "IP Address:%d.%d.%d.%d",
 208                                                 p[0], p[1], p[2], p[3]);
 209                 else if(gen->d.ip->length == 16)
 210                         {
 211                         BIO_printf(out, "IP Address");
 212                         for (i = 0; i < 8; i++)
 213                                 {
 214                                 BIO_printf(out, ":%X", p[0] << 8 | p[1]);
 215                                 p += 2;
 216                                 }
 217                         BIO_puts(out, "\n");
 218                         }
 219                 else
 220                         {
 221                         BIO_printf(out,"IP Address:<invalid>");
 222                         break;
 223                         }
 224                 break;
 225
 226                 case GEN_RID:
 227                 BIO_printf(out, "Registered ID");
 228                 i2a_ASN1_OBJECT(out, gen->d.rid);
 229                 break;
 230         }
 231         return 1;
 232 }
 233
 234 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
 235                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 236 {
 237         GENERAL_NAMES *gens = NULL;
 238         CONF_VALUE *cnf;
 239         int i;
 240         if(!(gens = sk_GENERAL_NAME_new_null())) {
 241                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 242                 return NULL;
 243         }
 244         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 245                 cnf = sk_CONF_VALUE_value(nval, i);
 246                 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
 247                                                 !strcmp(cnf->value, "copy")) {
 248                         if(!copy_issuer(ctx, gens)) goto err;
 249                 } else {
 250                         GENERAL_NAME *gen;
 251                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 252                                                                  goto err;
 253                         sk_GENERAL_NAME_push(gens, gen);
 254                 }
 255         }
 256         return gens;
 257         err:
 258         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 259         return NULL;
 260 }
 261
 262 /* Append subject altname of issuer to issuer alt name of subject */
 263
 264 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
 265 {
 266         GENERAL_NAMES *ialt;
 267         GENERAL_NAME *gen;
 268         X509_EXTENSION *ext;
 269         int i;
 270         if(ctx && (ctx->flags == CTX_TEST)) return 1;
 271         if(!ctx || !ctx->issuer_cert) {
 272                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
 273                 goto err;
 274         }
 275         i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
 276         if(i < 0) return 1;
 277         if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
 278                         !(ialt = X509V3_EXT_d2i(ext)) ) {
 279                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
 280                 goto err;
 281         }
 282
 283         for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
 284                 gen = sk_GENERAL_NAME_value(ialt, i);
 285                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 286                         X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
 287                         goto err;
 288                 }
 289         }
 290         sk_GENERAL_NAME_free(ialt);
 291
 292         return 1;
 293
 294         err:
 295         return 0;
 296
 297 }
 298
 299 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
 300                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 301 {
 302         GENERAL_NAMES *gens = NULL;
 303         CONF_VALUE *cnf;
 304         int i;
 305         if(!(gens = sk_GENERAL_NAME_new_null())) {
 306                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 307                 return NULL;
 308         }
 309         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 310                 cnf = sk_CONF_VALUE_value(nval, i);
 311                 if(!name_cmp(cnf->name, "email") && cnf->value &&
 312                                                 !strcmp(cnf->value, "copy")) {
 313                         if(!copy_email(ctx, gens, 0)) goto err;
 314                 } else if(!name_cmp(cnf->name, "email") && cnf->value &&
 315                                                 !strcmp(cnf->value, "move")) {
 316                         if(!copy_email(ctx, gens, 1)) goto err;
 317                 } else {
 318                         GENERAL_NAME *gen;
 319                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 320                                                                  goto err;
 321                         sk_GENERAL_NAME_push(gens, gen);
 322                 }
 323         }
 324         return gens;
 325         err:
 326         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 327         return NULL;
 328 }
 329
 330 /* Copy any email addresses in a certificate or request to
 331  * GENERAL_NAMES
 332  */
 333
 334 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
 335 {
 336         X509_NAME *nm;
 337         ASN1_IA5STRING *email = NULL;
 338         X509_NAME_ENTRY *ne;
 339         GENERAL_NAME *gen = NULL;
 340         int i;
 341         if(ctx->flags == CTX_TEST) return 1;
 342         if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
 343                 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
 344                 goto err;
 345         }
 346         /* Find the subject name */
 347         if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
 348         else nm = X509_REQ_get_subject_name(ctx->subject_req);
 349
 350         /* Now add any email address(es) to STACK */
 351         i = -1;
 352         while((i = X509_NAME_get_index_by_NID(nm,
 353                                          NID_pkcs9_emailAddress, i)) >= 0) {
 354                 ne = X509_NAME_get_entry(nm, i);
 355                 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
 356                 if (move_p)
 357                         {
 358                         X509_NAME_delete_entry(nm, i);
 359                         i--;
 360                         }
 361                 if(!email || !(gen = GENERAL_NAME_new())) {
 362                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 363                         goto err;
 364                 }
 365                 gen->d.ia5 = email;
 366                 email = NULL;
 367                 gen->type = GEN_EMAIL;
 368                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 369                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 370                         goto err;
 371                 }
 372                 gen = NULL;
 373         }
 374
 375
 376         return 1;
 377
 378         err:
 379         GENERAL_NAME_free(gen);
 380         M_ASN1_IA5STRING_free(email);
 381         return 0;
 382
 383 }
 384
 385 GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
 386                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 387 {
 388         GENERAL_NAME *gen;
 389         GENERAL_NAMES *gens = NULL;
 390         CONF_VALUE *cnf;
 391         int i;
 392         if(!(gens = sk_GENERAL_NAME_new_null())) {
 393                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 394                 return NULL;
 395         }
 396         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 397                 cnf = sk_CONF_VALUE_value(nval, i);
 398                 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err;
 399                 sk_GENERAL_NAME_push(gens, gen);
 400         }
 401         return gens;
 402         err:
 403         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 404         return NULL;
 405 }
 406
 407 GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
 408                                                          CONF_VALUE *cnf)
 409 {
 410 char is_string = 0;
 411 int type;
 412 GENERAL_NAME *gen = NULL;
 413
 414 char *name, *value;
 415
 416 name = cnf->name;
 417 value = cnf->value;
 418
 419 if(!value) {
 420         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_MISSING_VALUE);
 421         return NULL;
 422 }
 423
 424 if(!(gen = GENERAL_NAME_new())) {
 425         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 426         return NULL;
 427 }
 428
 429 if(!name_cmp(name, "email")) {
 430         is_string = 1;
 431         type = GEN_EMAIL;
 432 } else if(!name_cmp(name, "URI")) {
 433         is_string = 1;
 434         type = GEN_URI;
 435 } else if(!name_cmp(name, "DNS")) {
 436         is_string = 1;
 437         type = GEN_DNS;
 438 } else if(!name_cmp(name, "RID")) {
 439         ASN1_OBJECT *obj;
 440         if(!(obj = OBJ_txt2obj(value,0))) {
 441                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_OBJECT);
 442                 ERR_add_error_data(2, "value=", value);
 443                 goto err;
 444         }
 445         gen->d.rid = obj;
 446         type = GEN_RID;
 447 } else if(!name_cmp(name, "IP")) {
 448         if(!(gen->d.ip = a2i_IPADDRESS(value)))
 449                 {
 450                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
 451                 ERR_add_error_data(2, "value=", value);
 452                 goto err;
 453                 }
 454         type = GEN_IPADD;
 455 } else if(!name_cmp(name, "otherName")) {
 456         if (!do_othername(gen, value, ctx))
 457                 {
 458                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_OTHERNAME_ERROR);
 459                 goto err;
 460                 }
 461         type = GEN_OTHERNAME;
 462 } else {
 463         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_OPTION);
 464         ERR_add_error_data(2, "name=", name);
 465         goto err;
 466 }
 467
 468 if(is_string) {
 469         if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
 470                       !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
 471                                        strlen(value))) {
 472                 X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 473                 goto err;
 474         }
 475 }
 476
 477 gen->type = type;
 478
 479 return gen;
 480
 481 err:
 482 GENERAL_NAME_free(gen);
 483 return NULL;
 484 }
 485
 486 static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
 487         {
 488         char *objtmp = NULL, *p;
 489         int objlen;
 490         if (!(p = strchr(value, ';')))
 491                 return 0;
 492         if (!(gen->d.otherName = OTHERNAME_new()))
 493                 return 0;
 494         /* Free this up because we will overwrite it.
 495          * no need to free type_id because it is static
 496          */
 497         ASN1_TYPE_free(gen->d.otherName->value);
 498         if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))
 499                 return 0;
 500         objlen = p - value;
 501         objtmp = OPENSSL_malloc(objlen + 1);
 502         strncpy(objtmp, value, objlen);
 503         objtmp[objlen] = 0;
 504         gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
 505         OPENSSL_free(objtmp);
 506         if (!gen->d.otherName->type_id)
 507                 return 0;
 508         return 1;
 509         }