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 static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
  70
  71 X509V3_EXT_METHOD v3_alt[] = {
  72 { NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
  73 0,0,0,0,
  74 0,0,
  75 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
  76 (X509V3_EXT_V2I)v2i_subject_alt,
  77 NULL, NULL, NULL},
  78
  79 { NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
  80 0,0,0,0,
  81 0,0,
  82 (X509V3_EXT_I2V)i2v_GENERAL_NAMES,
  83 (X509V3_EXT_V2I)v2i_issuer_alt,
  84 NULL, NULL, NULL},
  85 };
  86
  87 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
  88                 GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret)
  89 {
  90         int i;
  91         GENERAL_NAME *gen;
  92         for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
  93                 gen = sk_GENERAL_NAME_value(gens, i);
  94                 ret = i2v_GENERAL_NAME(method, gen, ret);
  95         }
  96         if(!ret) return sk_CONF_VALUE_new_null();
  97         return ret;
  98 }
  99
 100 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
 101                                 GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret)
 102 {
 103         unsigned char *p;
 104         char oline[256], htmp[5];
 105         int i;
 106         switch (gen->type)
 107         {
 108                 case GEN_OTHERNAME:
 109                 X509V3_add_value("othername","<unsupported>", &ret);
 110                 break;
 111
 112                 case GEN_X400:
 113                 X509V3_add_value("X400Name","<unsupported>", &ret);
 114                 break;
 115
 116                 case GEN_EDIPARTY:
 117                 X509V3_add_value("EdiPartyName","<unsupported>", &ret);
 118                 break;
 119
 120                 case GEN_EMAIL:
 121                 X509V3_add_value_uchar("email",gen->d.ia5->data, &ret);
 122                 break;
 123
 124                 case GEN_DNS:
 125                 X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret);
 126                 break;
 127
 128                 case GEN_URI:
 129                 X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret);
 130                 break;
 131
 132                 case GEN_DIRNAME:
 133                 X509_NAME_oneline(gen->d.dirn, oline, 256);
 134                 X509V3_add_value("DirName",oline, &ret);
 135                 break;
 136
 137                 case GEN_IPADD:
 138                 p = gen->d.ip->data;
 139                 if(gen->d.ip->length == 4)
 140                         sprintf(oline, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
 141                 else if(gen->d.ip->length == 16)
 142                         {
 143                         oline[0] = 0;
 144                         for (i = 0; i < 8; i++)
 145                                 {
 146                                 sprintf(htmp, "%X", p[0] << 8 | p[1]);
 147                                 p += 2;
 148                                 strcat(oline, htmp);
 149                                 if (i != 7)
 150                                         strcat(oline, ":");
 151                                 }
 152                         }
 153                 else
 154                         {
 155                         X509V3_add_value("IP Address","<invalid>", &ret);
 156                         break;
 157                         }
 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 int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
 170 {
 171         unsigned char *p;
 172         int i;
 173         switch (gen->type)
 174         {
 175                 case GEN_OTHERNAME:
 176                 BIO_printf(out, "othername:<unsupported>");
 177                 break;
 178
 179                 case GEN_X400:
 180                 BIO_printf(out, "X400Name:<unsupported>");
 181                 break;
 182
 183                 case GEN_EDIPARTY:
 184                 /* Maybe fix this: it is supported now */
 185                 BIO_printf(out, "EdiPartyName:<unsupported>");
 186                 break;
 187
 188                 case GEN_EMAIL:
 189                 BIO_printf(out, "email:%s",gen->d.ia5->data);
 190                 break;
 191
 192                 case GEN_DNS:
 193                 BIO_printf(out, "DNS:%s",gen->d.ia5->data);
 194                 break;
 195
 196                 case GEN_URI:
 197                 BIO_printf(out, "URI:%s",gen->d.ia5->data);
 198                 break;
 199
 200                 case GEN_DIRNAME:
 201                 BIO_printf(out, "DirName: ");
 202                 X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
 203                 break;
 204
 205                 case GEN_IPADD:
 206                 p = gen->d.ip->data;
 207                 if(gen->d.ip->length == 4)
 208                         BIO_printf(out, "IP Address:%d.%d.%d.%d",
 209                                                 p[0], p[1], p[2], p[3]);
 210                 else if(gen->d.ip->length == 16)
 211                         {
 212                         BIO_printf(out, "IP Address");
 213                         for (i = 0; i < 8; i++)
 214                                 {
 215                                 BIO_printf(out, ":%X", p[0] << 8 | p[1]);
 216                                 p += 2;
 217                                 }
 218                         BIO_puts(out, "\n");
 219                         }
 220                 else
 221                         {
 222                         BIO_printf(out,"IP Address:<invalid>");
 223                         break;
 224                         }
 225                 break;
 226
 227                 case GEN_RID:
 228                 BIO_printf(out, "Registered ID");
 229                 i2a_ASN1_OBJECT(out, gen->d.rid);
 230                 break;
 231         }
 232         return 1;
 233 }
 234
 235 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
 236                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 237 {
 238         GENERAL_NAMES *gens = NULL;
 239         CONF_VALUE *cnf;
 240         int i;
 241         if(!(gens = sk_GENERAL_NAME_new_null())) {
 242                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 243                 return NULL;
 244         }
 245         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 246                 cnf = sk_CONF_VALUE_value(nval, i);
 247                 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
 248                                                 !strcmp(cnf->value, "copy")) {
 249                         if(!copy_issuer(ctx, gens)) goto err;
 250                 } else {
 251                         GENERAL_NAME *gen;
 252                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 253                                                                  goto err;
 254                         sk_GENERAL_NAME_push(gens, gen);
 255                 }
 256         }
 257         return gens;
 258         err:
 259         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 260         return NULL;
 261 }
 262
 263 /* Append subject altname of issuer to issuer alt name of subject */
 264
 265 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
 266 {
 267         GENERAL_NAMES *ialt;
 268         GENERAL_NAME *gen;
 269         X509_EXTENSION *ext;
 270         int i;
 271         if(ctx && (ctx->flags == CTX_TEST)) return 1;
 272         if(!ctx || !ctx->issuer_cert) {
 273                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
 274                 goto err;
 275         }
 276         i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
 277         if(i < 0) return 1;
 278         if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
 279                         !(ialt = X509V3_EXT_d2i(ext)) ) {
 280                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
 281                 goto err;
 282         }
 283
 284         for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
 285                 gen = sk_GENERAL_NAME_value(ialt, i);
 286                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 287                         X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
 288                         goto err;
 289                 }
 290         }
 291         sk_GENERAL_NAME_free(ialt);
 292
 293         return 1;
 294
 295         err:
 296         return 0;
 297
 298 }
 299
 300 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
 301                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 302 {
 303         GENERAL_NAMES *gens = NULL;
 304         CONF_VALUE *cnf;
 305         int i;
 306         if(!(gens = sk_GENERAL_NAME_new_null())) {
 307                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 308                 return NULL;
 309         }
 310         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 311                 cnf = sk_CONF_VALUE_value(nval, i);
 312                 if(!name_cmp(cnf->name, "email") && cnf->value &&
 313                                                 !strcmp(cnf->value, "copy")) {
 314                         if(!copy_email(ctx, gens, 0)) goto err;
 315                 } else if(!name_cmp(cnf->name, "email") && cnf->value &&
 316                                                 !strcmp(cnf->value, "move")) {
 317                         if(!copy_email(ctx, gens, 1)) goto err;
 318                 } else {
 319                         GENERAL_NAME *gen;
 320                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 321                                                                  goto err;
 322                         sk_GENERAL_NAME_push(gens, gen);
 323                 }
 324         }
 325         return gens;
 326         err:
 327         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 328         return NULL;
 329 }
 330
 331 /* Copy any email addresses in a certificate or request to
 332  * GENERAL_NAMES
 333  */
 334
 335 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
 336 {
 337         X509_NAME *nm;
 338         ASN1_IA5STRING *email = NULL;
 339         X509_NAME_ENTRY *ne;
 340         GENERAL_NAME *gen = NULL;
 341         int i;
 342         if(ctx->flags == CTX_TEST) return 1;
 343         if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
 344                 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
 345                 goto err;
 346         }
 347         /* Find the subject name */
 348         if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
 349         else nm = X509_REQ_get_subject_name(ctx->subject_req);
 350
 351         /* Now add any email address(es) to STACK */
 352         i = -1;
 353         while((i = X509_NAME_get_index_by_NID(nm,
 354                                          NID_pkcs9_emailAddress, i)) >= 0) {
 355                 ne = X509_NAME_get_entry(nm, i);
 356                 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
 357                 if (move_p)
 358                         {
 359                         X509_NAME_delete_entry(nm, i);
 360                         i--;
 361                         }
 362                 if(!email || !(gen = GENERAL_NAME_new())) {
 363                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 364                         goto err;
 365                 }
 366                 gen->d.ia5 = email;
 367                 email = NULL;
 368                 gen->type = GEN_EMAIL;
 369                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 370                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 371                         goto err;
 372                 }
 373                 gen = NULL;
 374         }
 375
 376
 377         return 1;
 378
 379         err:
 380         GENERAL_NAME_free(gen);
 381         M_ASN1_IA5STRING_free(email);
 382         return 0;
 383
 384 }
 385
 386 GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
 387                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 388 {
 389         GENERAL_NAME *gen;
 390         GENERAL_NAMES *gens = NULL;
 391         CONF_VALUE *cnf;
 392         int i;
 393         if(!(gens = sk_GENERAL_NAME_new_null())) {
 394                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 395                 return NULL;
 396         }
 397         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 398                 cnf = sk_CONF_VALUE_value(nval, i);
 399                 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err;
 400                 sk_GENERAL_NAME_push(gens, gen);
 401         }
 402         return gens;
 403         err:
 404         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 405         return NULL;
 406 }
 407
 408 GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
 409                                                          CONF_VALUE *cnf)
 410         {
 411         return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
 412         }
 413
 414 GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
 415                                 X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
 416                                                  CONF_VALUE *cnf, int is_nc)
 417         {
 418         char is_string = 0;
 419         int type;
 420         GENERAL_NAME *gen = NULL;
 421
 422         char *name, *value;
 423
 424         name = cnf->name;
 425         value = cnf->value;
 426
 427         if(!value)
 428                 {
 429                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_MISSING_VALUE);
 430                 return NULL;
 431                 }
 432
 433         if (out)
 434                 gen = out;
 435         else
 436                 {
 437                 gen = GENERAL_NAME_new();
 438                 if(gen == NULL)
 439                         {
 440                         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 441                         return NULL;
 442                         }
 443                 }
 444
 445         if(!name_cmp(name, "email"))
 446                 {
 447                 is_string = 1;
 448                 type = GEN_EMAIL;
 449                 }
 450         else if(!name_cmp(name, "URI"))
 451                 {
 452                 is_string = 1;
 453                 type = GEN_URI;
 454                 }
 455         else if(!name_cmp(name, "DNS"))
 456                 {
 457                 is_string = 1;
 458                 type = GEN_DNS;
 459                 }
 460         else if(!name_cmp(name, "RID"))
 461                 {
 462                 ASN1_OBJECT *obj;
 463                 if(!(obj = OBJ_txt2obj(value,0)))
 464                         {
 465                         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_OBJECT);
 466                         ERR_add_error_data(2, "value=", value);
 467                         goto err;
 468                         }
 469                 gen->d.rid = obj;
 470                 type = GEN_RID;
 471                 }
 472         else if(!name_cmp(name, "IP"))
 473                 {
 474                 if (is_nc)
 475                         gen->d.ip = a2i_IPADDRESS_NC(value);
 476                 else
 477                         gen->d.ip = a2i_IPADDRESS(value);
 478                 if(gen->d.ip == NULL)
 479                         {
 480                         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
 481                         ERR_add_error_data(2, "value=", value);
 482                         goto err;
 483                         }
 484                 type = GEN_IPADD;
 485                 }
 486         else if(!name_cmp(name, "dirName"))
 487                 {
 488                 type = GEN_DIRNAME;
 489                 if (!do_dirname(gen, value, ctx))
 490                         {
 491                         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_DIRNAME_ERROR);
 492                         goto err;
 493                         }
 494                 }
 495         else if(!name_cmp(name, "otherName"))
 496                 {
 497                 if (!do_othername(gen, value, ctx))
 498                         {
 499                         X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_OTHERNAME_ERROR);
 500                         goto err;
 501                         }
 502                 type = GEN_OTHERNAME;
 503                 }
 504         else
 505                 {
 506                 X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_UNSUPPORTED_OPTION);
 507                 ERR_add_error_data(2, "name=", name);
 508                 goto err;
 509                 }
 510
 511         if(is_string)
 512                 {
 513                 if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
 514                               !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
 515                                                strlen(value)))
 516                         {
 517                         X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
 518                         goto err;
 519                         }
 520                 }
 521
 522         gen->type = type;
 523
 524         return gen;
 525
 526         err:
 527         GENERAL_NAME_free(gen);
 528         return NULL;
 529         }
 530
 531 static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
 532         {
 533         char *objtmp = NULL, *p;
 534         int objlen;
 535         if (!(p = strchr(value, ';')))
 536                 return 0;
 537         if (!(gen->d.otherName = OTHERNAME_new()))
 538                 return 0;
 539         /* Free this up because we will overwrite it.
 540          * no need to free type_id because it is static
 541          */
 542         ASN1_TYPE_free(gen->d.otherName->value);
 543         if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))
 544                 return 0;
 545         objlen = p - value;
 546         objtmp = OPENSSL_malloc(objlen + 1);
 547         strncpy(objtmp, value, objlen);
 548         objtmp[objlen] = 0;
 549         gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
 550         OPENSSL_free(objtmp);
 551         if (!gen->d.otherName->type_id)
 552                 return 0;
 553         return 1;
 554         }
 555
 556 static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
 557         {
 558         int ret;
 559         STACK_OF(CONF_VALUE) *sk;
 560         X509_NAME *nm;
 561         if (!(nm = X509_NAME_new()))
 562                 return 0;
 563         sk = X509V3_get_section(ctx, value);
 564         if (!sk)
 565                 {
 566                 X509V3err(X509V3_F_DO_DIRNAME,X509V3_R_SECTION_NOT_FOUND);
 567                 ERR_add_error_data(2, "section=", value);
 568                 X509_NAME_free(nm);
 569                 return 0;
 570                 }
 571         /* FIXME: should allow other character types... */
 572         ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC);
 573         if (!ret)
 574                 X509_NAME_free(nm);
 575         gen->d.dirn = nm;
 576
 577         return ret;
 578         }