crypto/openssl/crypto/x509v3/v3_alt.c

   1 /* v3_alt.c */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) 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 const 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                         BIO_snprintf(oline, sizeof oline,
 141                                      "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
 142                 else if(gen->d.ip->length == 16)
 143                         {
 144                         oline[0] = 0;
 145                         for (i = 0; i < 8; i++)
 146                                 {
 147                                 BIO_snprintf(htmp, sizeof htmp,
 148                                              "%X", p[0] << 8 | p[1]);
 149                                 p += 2;
 150                                 strcat(oline, htmp);
 151                                 if (i != 7)
 152                                         strcat(oline, ":");
 153                                 }
 154                         }
 155                 else
 156                         {
 157                         X509V3_add_value("IP Address","<invalid>", &ret);
 158                         break;
 159                         }
 160                 X509V3_add_value("IP Address",oline, &ret);
 161                 break;
 162
 163                 case GEN_RID:
 164                 i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
 165                 X509V3_add_value("Registered ID",oline, &ret);
 166                 break;
 167         }
 168         return ret;
 169 }
 170
 171 int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
 172 {
 173         unsigned char *p;
 174         int i;
 175         switch (gen->type)
 176         {
 177                 case GEN_OTHERNAME:
 178                 BIO_printf(out, "othername:<unsupported>");
 179                 break;
 180
 181                 case GEN_X400:
 182                 BIO_printf(out, "X400Name:<unsupported>");
 183                 break;
 184
 185                 case GEN_EDIPARTY:
 186                 /* Maybe fix this: it is supported now */
 187                 BIO_printf(out, "EdiPartyName:<unsupported>");
 188                 break;
 189
 190                 case GEN_EMAIL:
 191                 BIO_printf(out, "email:%s",gen->d.ia5->data);
 192                 break;
 193
 194                 case GEN_DNS:
 195                 BIO_printf(out, "DNS:%s",gen->d.ia5->data);
 196                 break;
 197
 198                 case GEN_URI:
 199                 BIO_printf(out, "URI:%s",gen->d.ia5->data);
 200                 break;
 201
 202                 case GEN_DIRNAME:
 203                 BIO_printf(out, "DirName: ");
 204                 X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
 205                 break;
 206
 207                 case GEN_IPADD:
 208                 p = gen->d.ip->data;
 209                 if(gen->d.ip->length == 4)
 210                         BIO_printf(out, "IP Address:%d.%d.%d.%d",
 211                                                 p[0], p[1], p[2], p[3]);
 212                 else if(gen->d.ip->length == 16)
 213                         {
 214                         BIO_printf(out, "IP Address");
 215                         for (i = 0; i < 8; i++)
 216                                 {
 217                                 BIO_printf(out, ":%X", p[0] << 8 | p[1]);
 218                                 p += 2;
 219                                 }
 220                         BIO_puts(out, "\n");
 221                         }
 222                 else
 223                         {
 224                         BIO_printf(out,"IP Address:<invalid>");
 225                         break;
 226                         }
 227                 break;
 228
 229                 case GEN_RID:
 230                 BIO_printf(out, "Registered ID");
 231                 i2a_ASN1_OBJECT(out, gen->d.rid);
 232                 break;
 233         }
 234         return 1;
 235 }
 236
 237 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
 238                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 239 {
 240         GENERAL_NAMES *gens = NULL;
 241         CONF_VALUE *cnf;
 242         int i;
 243         if(!(gens = sk_GENERAL_NAME_new_null())) {
 244                 X509V3err(X509V3_F_V2I_ISSUER_ALT,ERR_R_MALLOC_FAILURE);
 245                 return NULL;
 246         }
 247         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 248                 cnf = sk_CONF_VALUE_value(nval, i);
 249                 if(!name_cmp(cnf->name, "issuer") && cnf->value &&
 250                                                 !strcmp(cnf->value, "copy")) {
 251                         if(!copy_issuer(ctx, gens)) goto err;
 252                 } else {
 253                         GENERAL_NAME *gen;
 254                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 255                                                                  goto err;
 256                         sk_GENERAL_NAME_push(gens, gen);
 257                 }
 258         }
 259         return gens;
 260         err:
 261         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 262         return NULL;
 263 }
 264
 265 /* Append subject altname of issuer to issuer alt name of subject */
 266
 267 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
 268 {
 269         GENERAL_NAMES *ialt;
 270         GENERAL_NAME *gen;
 271         X509_EXTENSION *ext;
 272         int i;
 273         if(ctx && (ctx->flags == CTX_TEST)) return 1;
 274         if(!ctx || !ctx->issuer_cert) {
 275                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
 276                 goto err;
 277         }
 278         i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
 279         if(i < 0) return 1;
 280         if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
 281                         !(ialt = X509V3_EXT_d2i(ext)) ) {
 282                 X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
 283                 goto err;
 284         }
 285
 286         for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
 287                 gen = sk_GENERAL_NAME_value(ialt, i);
 288                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 289                         X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
 290                         goto err;
 291                 }
 292         }
 293         sk_GENERAL_NAME_free(ialt);
 294
 295         return 1;
 296
 297         err:
 298         return 0;
 299
 300 }
 301
 302 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
 303                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 304 {
 305         GENERAL_NAMES *gens = NULL;
 306         CONF_VALUE *cnf;
 307         int i;
 308         if(!(gens = sk_GENERAL_NAME_new_null())) {
 309                 X509V3err(X509V3_F_V2I_SUBJECT_ALT,ERR_R_MALLOC_FAILURE);
 310                 return NULL;
 311         }
 312         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 313                 cnf = sk_CONF_VALUE_value(nval, i);
 314                 if(!name_cmp(cnf->name, "email") && cnf->value &&
 315                                                 !strcmp(cnf->value, "copy")) {
 316                         if(!copy_email(ctx, gens, 0)) goto err;
 317                 } else if(!name_cmp(cnf->name, "email") && cnf->value &&
 318                                                 !strcmp(cnf->value, "move")) {
 319                         if(!copy_email(ctx, gens, 1)) goto err;
 320                 } else {
 321                         GENERAL_NAME *gen;
 322                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 323                                                                  goto err;
 324                         sk_GENERAL_NAME_push(gens, gen);
 325                 }
 326         }
 327         return gens;
 328         err:
 329         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 330         return NULL;
 331 }
 332
 333 /* Copy any email addresses in a certificate or request to
 334  * GENERAL_NAMES
 335  */
 336
 337 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
 338 {
 339         X509_NAME *nm;
 340         ASN1_IA5STRING *email = NULL;
 341         X509_NAME_ENTRY *ne;
 342         GENERAL_NAME *gen = NULL;
 343         int i;
 344         if(ctx != NULL && ctx->flags == CTX_TEST)
 345                 return 1;
 346         if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
 347                 X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
 348                 goto err;
 349         }
 350         /* Find the subject name */
 351         if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
 352         else nm = X509_REQ_get_subject_name(ctx->subject_req);
 353
 354         /* Now add any email address(es) to STACK */
 355         i = -1;
 356         while((i = X509_NAME_get_index_by_NID(nm,
 357                                          NID_pkcs9_emailAddress, i)) >= 0) {
 358                 ne = X509_NAME_get_entry(nm, i);
 359                 email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
 360                 if (move_p)
 361                         {
 362                         X509_NAME_delete_entry(nm, i);
 363                         X509_NAME_ENTRY_free(ne);
 364                         i--;
 365                         }
 366                 if(!email || !(gen = GENERAL_NAME_new())) {
 367                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 368                         goto err;
 369                 }
 370                 gen->d.ia5 = email;
 371                 email = NULL;
 372                 gen->type = GEN_EMAIL;
 373                 if(!sk_GENERAL_NAME_push(gens, gen)) {
 374                         X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
 375                         goto err;
 376                 }
 377                 gen = NULL;
 378         }
 379
 380
 381         return 1;
 382
 383         err:
 384         GENERAL_NAME_free(gen);
 385         M_ASN1_IA5STRING_free(email);
 386         return 0;
 387
 388 }
 389
 390 GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
 391                                 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 392 {
 393         GENERAL_NAME *gen;
 394         GENERAL_NAMES *gens = NULL;
 395         CONF_VALUE *cnf;
 396         int i;
 397         if(!(gens = sk_GENERAL_NAME_new_null())) {
 398                 X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
 399                 return NULL;
 400         }
 401         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 402                 cnf = sk_CONF_VALUE_value(nval, i);
 403                 if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err;
 404                 sk_GENERAL_NAME_push(gens, gen);
 405         }
 406         return gens;
 407         err:
 408         sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 409         return NULL;
 410 }
 411
 412 GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
 413                                                          CONF_VALUE *cnf)
 414         {
 415         return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
 416         }
 417
 418 GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
 419                                 X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
 420                                                  CONF_VALUE *cnf, int is_nc)
 421         {
 422         char is_string = 0;
 423         int type;
 424         GENERAL_NAME *gen = NULL;
 425
 426         char *name, *value;
 427
 428         name = cnf->name;
 429         value = cnf->value;
 430
 431         if(!value)
 432                 {
 433                 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_MISSING_VALUE);
 434                 return NULL;
 435                 }
 436
 437         if (out)
 438                 gen = out;
 439         else
 440                 {
 441                 gen = GENERAL_NAME_new();
 442                 if(gen == NULL)
 443                         {
 444                         X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,ERR_R_MALLOC_FAILURE);
 445                         return NULL;
 446                         }
 447                 }
 448
 449         if(!name_cmp(name, "email"))
 450                 {
 451                 is_string = 1;
 452                 type = GEN_EMAIL;
 453                 }
 454         else if(!name_cmp(name, "URI"))
 455                 {
 456                 is_string = 1;
 457                 type = GEN_URI;
 458                 }
 459         else if(!name_cmp(name, "DNS"))
 460                 {
 461                 is_string = 1;
 462                 type = GEN_DNS;
 463                 }
 464         else if(!name_cmp(name, "RID"))
 465                 {
 466                 ASN1_OBJECT *obj;
 467                 if(!(obj = OBJ_txt2obj(value,0)))
 468                         {
 469                         X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_BAD_OBJECT);
 470                         ERR_add_error_data(2, "value=", value);
 471                         goto err;
 472                         }
 473                 gen->d.rid = obj;
 474                 type = GEN_RID;
 475                 }
 476         else if(!name_cmp(name, "IP"))
 477                 {
 478                 if (is_nc)
 479                         gen->d.ip = a2i_IPADDRESS_NC(value);
 480                 else
 481                         gen->d.ip = a2i_IPADDRESS(value);
 482                 if(gen->d.ip == NULL)
 483                         {
 484                         X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_BAD_IP_ADDRESS);
 485                         ERR_add_error_data(2, "value=", value);
 486                         goto err;
 487                         }
 488                 type = GEN_IPADD;
 489                 }
 490         else if(!name_cmp(name, "dirName"))
 491                 {
 492                 type = GEN_DIRNAME;
 493                 if (!do_dirname(gen, value, ctx))
 494                         {
 495                         X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_DIRNAME_ERROR);
 496                         goto err;
 497                         }
 498                 }
 499         else if(!name_cmp(name, "otherName"))
 500                 {
 501                 if (!do_othername(gen, value, ctx))
 502                         {
 503                         X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_OTHERNAME_ERROR);
 504                         goto err;
 505                         }
 506                 type = GEN_OTHERNAME;
 507                 }
 508         else
 509                 {
 510                 X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_UNSUPPORTED_OPTION);
 511                 ERR_add_error_data(2, "name=", name);
 512                 goto err;
 513                 }
 514
 515         if(is_string)
 516                 {
 517                 if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
 518                               !ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
 519                                                strlen(value)))
 520                         {
 521                         X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,ERR_R_MALLOC_FAILURE);
 522                         goto err;
 523                         }
 524                 }
 525
 526         gen->type = type;
 527
 528         return gen;
 529
 530         err:
 531         if (!out)
 532                 GENERAL_NAME_free(gen);
 533         return NULL;
 534         }
 535
 536 static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
 537         {
 538         char *objtmp = NULL, *p;
 539         int objlen;
 540         if (!(p = strchr(value, ';')))
 541                 return 0;
 542         if (!(gen->d.otherName = OTHERNAME_new()))
 543                 return 0;
 544         /* Free this up because we will overwrite it.
 545          * no need to free type_id because it is static
 546          */
 547         ASN1_TYPE_free(gen->d.otherName->value);
 548         if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))
 549                 return 0;
 550         objlen = p - value;
 551         objtmp = OPENSSL_malloc(objlen + 1);
 552         strncpy(objtmp, value, objlen);
 553         objtmp[objlen] = 0;
 554         gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
 555         OPENSSL_free(objtmp);
 556         if (!gen->d.otherName->type_id)
 557                 return 0;
 558         return 1;
 559         }
 560
 561 static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
 562         {
 563         int ret;
 564         STACK_OF(CONF_VALUE) *sk;
 565         X509_NAME *nm;
 566         if (!(nm = X509_NAME_new()))
 567                 return 0;
 568         sk = X509V3_get_section(ctx, value);
 569         if (!sk)
 570                 {
 571                 X509V3err(X509V3_F_DO_DIRNAME,X509V3_R_SECTION_NOT_FOUND);
 572                 ERR_add_error_data(2, "section=", value);
 573                 X509_NAME_free(nm);
 574                 return 0;
 575                 }
 576         /* FIXME: should allow other character types... */
 577         ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC);
 578         if (!ret)
 579                 X509_NAME_free(nm);
 580         gen->d.dirn = nm;
 581
 582         X509V3_section_free(ctx, sk);
 583
 584         return ret;
 585         }