crypto/x509/v3_san.c

   1 /*
   2  * Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include "internal/cryptlib.h"
  12 #include "crypto/x509.h"
  13 #include <openssl/conf.h>
  14 #include <openssl/x509v3.h>
  15 #include <openssl/bio.h>
  16 #include "ext_dat.h"
  17
  18 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
  19                                       X509V3_CTX *ctx,
  20                                       STACK_OF(CONF_VALUE) *nval);
  21 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
  22                                      X509V3_CTX *ctx,
  23                                      STACK_OF(CONF_VALUE) *nval);
  24 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
  25 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
  26 static int do_othername(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx);
  27 static int do_dirname(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx);
  28
  29 const X509V3_EXT_METHOD ossl_v3_alt[3] = {
  30     {NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
  31      0, 0, 0, 0,
  32      0, 0,
  33      (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
  34      (X509V3_EXT_V2I)v2i_subject_alt,
  35      NULL, NULL, NULL},
  36
  37     {NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
  38      0, 0, 0, 0,
  39      0, 0,
  40      (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
  41      (X509V3_EXT_V2I)v2i_issuer_alt,
  42      NULL, NULL, NULL},
  43
  44     {NID_certificate_issuer, 0, ASN1_ITEM_ref(GENERAL_NAMES),
  45      0, 0, 0, 0,
  46      0, 0,
  47      (X509V3_EXT_I2V) i2v_GENERAL_NAMES,
  48      NULL, NULL, NULL, NULL},
  49 };
  50
  51 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
  52                                         GENERAL_NAMES *gens,
  53                                         STACK_OF(CONF_VALUE) *ret)
  54 {
  55     int i;
  56     GENERAL_NAME *gen;
  57     STACK_OF(CONF_VALUE) *tmpret = NULL, *origret = ret;
  58
  59     for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
  60         gen = sk_GENERAL_NAME_value(gens, i);
  61         /*
  62          * i2v_GENERAL_NAME allocates ret if it is NULL. If something goes
  63          * wrong we need to free the stack - but only if it was empty when we
  64          * originally entered this function.
  65          */
  66         tmpret = i2v_GENERAL_NAME(method, gen, ret);
  67         if (tmpret == NULL) {
  68             if (origret == NULL)
  69                 sk_CONF_VALUE_pop_free(ret, X509V3_conf_free);
  70             return NULL;
  71         }
  72         ret = tmpret;
  73     }
  74     if (ret == NULL)
  75         return sk_CONF_VALUE_new_null();
  76     return ret;
  77 }
  78
  79 STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
  80                                        GENERAL_NAME *gen,
  81                                        STACK_OF(CONF_VALUE) *ret)
  82 {
  83     char othername[300];
  84     char oline[256], *tmp;
  85
  86     switch (gen->type) {
  87     case GEN_OTHERNAME:
  88         switch (OBJ_obj2nid(gen->d.otherName->type_id)) {
  89         case NID_id_on_SmtpUTF8Mailbox:
  90             if (gen->d.otherName->value->type != V_ASN1_UTF8STRING
  91                     || !x509v3_add_len_value_uchar("othername: SmtpUTF8Mailbox:",
  92                             gen->d.otherName->value->value.utf8string->data,
  93                             gen->d.otherName->value->value.utf8string->length,
  94                             &ret))
  95                 return NULL;
  96             break;
  97         case NID_XmppAddr:
  98             if (gen->d.otherName->value->type != V_ASN1_UTF8STRING
  99                     || !x509v3_add_len_value_uchar("othername: XmppAddr:",
 100                             gen->d.otherName->value->value.utf8string->data,
 101                             gen->d.otherName->value->value.utf8string->length,
 102                             &ret))
 103                 return NULL;
 104             break;
 105         case NID_SRVName:
 106             if (gen->d.otherName->value->type != V_ASN1_IA5STRING
 107                     || !x509v3_add_len_value_uchar("othername: SRVName:",
 108                             gen->d.otherName->value->value.ia5string->data,
 109                             gen->d.otherName->value->value.ia5string->length,
 110                             &ret))
 111                 return NULL;
 112             break;
 113         case NID_ms_upn:
 114             if (gen->d.otherName->value->type != V_ASN1_UTF8STRING
 115                     || !x509v3_add_len_value_uchar("othername: UPN:",
 116                             gen->d.otherName->value->value.utf8string->data,
 117                             gen->d.otherName->value->value.utf8string->length,
 118                             &ret))
 119                 return NULL;
 120             break;
 121         case NID_NAIRealm:
 122             if (gen->d.otherName->value->type != V_ASN1_UTF8STRING
 123                     || !x509v3_add_len_value_uchar("othername: NAIRealm:",
 124                             gen->d.otherName->value->value.utf8string->data,
 125                             gen->d.otherName->value->value.utf8string->length,
 126                             &ret))
 127                 return NULL;
 128             break;
 129         default:
 130             if (OBJ_obj2txt(oline, sizeof(oline), gen->d.otherName->type_id, 0) > 0)
 131                 BIO_snprintf(othername, sizeof(othername), "othername: %s:",
 132                              oline);
 133             else
 134                 OPENSSL_strlcpy(othername, "othername:", sizeof(othername));
 135
 136             /* check if the value is something printable */
 137             if (gen->d.otherName->value->type == V_ASN1_IA5STRING) {
 138                 if (x509v3_add_len_value_uchar(othername,
 139                              gen->d.otherName->value->value.ia5string->data,
 140                              gen->d.otherName->value->value.ia5string->length,
 141                              &ret))
 142                     return ret;
 143             }
 144             if (gen->d.otherName->value->type == V_ASN1_UTF8STRING) {
 145                 if (x509v3_add_len_value_uchar(othername,
 146                              gen->d.otherName->value->value.utf8string->data,
 147                              gen->d.otherName->value->value.utf8string->length,
 148                              &ret))
 149                     return ret;
 150             }
 151             if (!X509V3_add_value(othername, "<unsupported>", &ret))
 152                 return NULL;
 153             break;
 154         }
 155         break;
 156
 157     case GEN_X400:
 158         if (!X509V3_add_value("X400Name", "<unsupported>", &ret))
 159             return NULL;
 160         break;
 161
 162     case GEN_EDIPARTY:
 163         if (!X509V3_add_value("EdiPartyName", "<unsupported>", &ret))
 164             return NULL;
 165         break;
 166
 167     case GEN_EMAIL:
 168         if (!x509v3_add_len_value_uchar("email", gen->d.ia5->data,
 169                                         gen->d.ia5->length, &ret))
 170             return NULL;
 171         break;
 172
 173     case GEN_DNS:
 174         if (!x509v3_add_len_value_uchar("DNS", gen->d.ia5->data,
 175                                         gen->d.ia5->length, &ret))
 176             return NULL;
 177         break;
 178
 179     case GEN_URI:
 180         if (!x509v3_add_len_value_uchar("URI", gen->d.ia5->data,
 181                                         gen->d.ia5->length, &ret))
 182             return NULL;
 183         break;
 184
 185     case GEN_DIRNAME:
 186         if (X509_NAME_oneline(gen->d.dirn, oline, sizeof(oline)) == NULL
 187                 || !X509V3_add_value("DirName", oline, &ret))
 188             return NULL;
 189         break;
 190
 191     case GEN_IPADD:
 192         tmp = ossl_ipaddr_to_asc(gen->d.ip->data, gen->d.ip->length);
 193         if (tmp == NULL || !X509V3_add_value("IP Address", tmp, &ret))
 194             ret = NULL;
 195         OPENSSL_free(tmp);
 196         break;
 197
 198     case GEN_RID:
 199         i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
 200         if (!X509V3_add_value("Registered ID", oline, &ret))
 201             return NULL;
 202         break;
 203     }
 204     return ret;
 205 }
 206
 207 int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
 208 {
 209     char *tmp;
 210     int nid;
 211
 212     switch (gen->type) {
 213     case GEN_OTHERNAME:
 214         nid = OBJ_obj2nid(gen->d.otherName->type_id);
 215         /* Validate the types are as we expect before we use them */
 216         if ((nid == NID_SRVName
 217              && gen->d.otherName->value->type != V_ASN1_IA5STRING)
 218                 || (nid != NID_SRVName
 219                     && gen->d.otherName->value->type != V_ASN1_UTF8STRING)) {
 220             BIO_printf(out, "othername:<unsupported>");
 221             break;
 222         }
 223
 224         switch (nid) {
 225         case NID_id_on_SmtpUTF8Mailbox:
 226             BIO_printf(out, "othername:SmtpUTF8Mailbox:%.*s",
 227                        gen->d.otherName->value->value.utf8string->length,
 228                        gen->d.otherName->value->value.utf8string->data);
 229             break;
 230         case NID_XmppAddr:
 231             BIO_printf(out, "othername:XmppAddr:%.*s",
 232                        gen->d.otherName->value->value.utf8string->length,
 233                        gen->d.otherName->value->value.utf8string->data);
 234             break;
 235         case NID_SRVName:
 236             BIO_printf(out, "othername:SRVName:%.*s",
 237                        gen->d.otherName->value->value.ia5string->length,
 238                        gen->d.otherName->value->value.ia5string->data);
 239             break;
 240         case NID_ms_upn:
 241             BIO_printf(out, "othername:UPN:%.*s",
 242                        gen->d.otherName->value->value.utf8string->length,
 243                        gen->d.otherName->value->value.utf8string->data);
 244             break;
 245         case NID_NAIRealm:
 246             BIO_printf(out, "othername:NAIRealm:%.*s",
 247                        gen->d.otherName->value->value.utf8string->length,
 248                        gen->d.otherName->value->value.utf8string->data);
 249             break;
 250         default:
 251             BIO_printf(out, "othername:<unsupported>");
 252             break;
 253         }
 254         break;
 255
 256     case GEN_X400:
 257         BIO_printf(out, "X400Name:<unsupported>");
 258         break;
 259
 260     case GEN_EDIPARTY:
 261         /* Maybe fix this: it is supported now */
 262         BIO_printf(out, "EdiPartyName:<unsupported>");
 263         break;
 264
 265     case GEN_EMAIL:
 266         BIO_printf(out, "email:");
 267         ASN1_STRING_print(out, gen->d.ia5);
 268         break;
 269
 270     case GEN_DNS:
 271         BIO_printf(out, "DNS:");
 272         ASN1_STRING_print(out, gen->d.ia5);
 273         break;
 274
 275     case GEN_URI:
 276         BIO_printf(out, "URI:");
 277         ASN1_STRING_print(out, gen->d.ia5);
 278         break;
 279
 280     case GEN_DIRNAME:
 281         BIO_printf(out, "DirName:");
 282         X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
 283         break;
 284
 285     case GEN_IPADD:
 286         tmp = ossl_ipaddr_to_asc(gen->d.ip->data, gen->d.ip->length);
 287         if (tmp == NULL)
 288             return 0;
 289         BIO_printf(out, "IP Address:%s", tmp);
 290         OPENSSL_free(tmp);
 291         break;
 292
 293     case GEN_RID:
 294         BIO_printf(out, "Registered ID:");
 295         i2a_ASN1_OBJECT(out, gen->d.rid);
 296         break;
 297     }
 298     return 1;
 299 }
 300
 301 static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
 302                                      X509V3_CTX *ctx,
 303                                      STACK_OF(CONF_VALUE) *nval)
 304 {
 305     const int num = sk_CONF_VALUE_num(nval);
 306     GENERAL_NAMES *gens = sk_GENERAL_NAME_new_reserve(NULL, num);
 307     int i;
 308
 309     if (gens == NULL) {
 310         ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
 311         sk_GENERAL_NAME_free(gens);
 312         return NULL;
 313     }
 314     for (i = 0; i < num; i++) {
 315         CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
 316
 317         if (!ossl_v3_name_cmp(cnf->name, "issuer")
 318             && cnf->value && strcmp(cnf->value, "copy") == 0) {
 319             if (!copy_issuer(ctx, gens))
 320                 goto err;
 321         } else {
 322             GENERAL_NAME *gen = v2i_GENERAL_NAME(method, ctx, cnf);
 323
 324             if (gen == NULL)
 325                 goto err;
 326             sk_GENERAL_NAME_push(gens, gen); /* no failure as it was reserved */
 327         }
 328     }
 329     return gens;
 330  err:
 331     sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 332     return NULL;
 333 }
 334
 335 /* Append subject altname of issuer to issuer alt name of subject */
 336
 337 static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
 338 {
 339     GENERAL_NAMES *ialt;
 340     GENERAL_NAME *gen;
 341     X509_EXTENSION *ext;
 342     int i, num;
 343
 344     if (ctx != NULL && (ctx->flags & X509V3_CTX_TEST) != 0)
 345         return 1;
 346     if (!ctx || !ctx->issuer_cert) {
 347         ERR_raise(ERR_LIB_X509V3, X509V3_R_NO_ISSUER_DETAILS);
 348         goto err;
 349     }
 350     i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
 351     if (i < 0)
 352         return 1;
 353     if ((ext = X509_get_ext(ctx->issuer_cert, i)) == NULL
 354         || (ialt = X509V3_EXT_d2i(ext)) == NULL) {
 355         ERR_raise(ERR_LIB_X509V3, X509V3_R_ISSUER_DECODE_ERROR);
 356         goto err;
 357     }
 358
 359     num = sk_GENERAL_NAME_num(ialt);
 360     if (!sk_GENERAL_NAME_reserve(gens, num)) {
 361         ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
 362         goto err;
 363     }
 364
 365     for (i = 0; i < num; i++) {
 366         gen = sk_GENERAL_NAME_value(ialt, i);
 367         sk_GENERAL_NAME_push(gens, gen);     /* no failure as it was reserved */
 368     }
 369     sk_GENERAL_NAME_free(ialt);
 370
 371     return 1;
 372
 373  err:
 374     return 0;
 375
 376 }
 377
 378 static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
 379                                       X509V3_CTX *ctx,
 380                                       STACK_OF(CONF_VALUE) *nval)
 381 {
 382     GENERAL_NAMES *gens;
 383     CONF_VALUE *cnf;
 384     const int num = sk_CONF_VALUE_num(nval);
 385     int i;
 386
 387     gens = sk_GENERAL_NAME_new_reserve(NULL, num);
 388     if (gens == NULL) {
 389         ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
 390         sk_GENERAL_NAME_free(gens);
 391         return NULL;
 392     }
 393
 394     for (i = 0; i < num; i++) {
 395         cnf = sk_CONF_VALUE_value(nval, i);
 396         if (ossl_v3_name_cmp(cnf->name, "email") == 0
 397             && cnf->value && strcmp(cnf->value, "copy") == 0) {
 398             if (!copy_email(ctx, gens, 0))
 399                 goto err;
 400         } else if (ossl_v3_name_cmp(cnf->name, "email") == 0
 401                    && cnf->value && strcmp(cnf->value, "move") == 0) {
 402             if (!copy_email(ctx, gens, 1))
 403                 goto err;
 404         } else {
 405             GENERAL_NAME *gen;
 406             if ((gen = v2i_GENERAL_NAME(method, ctx, cnf)) == NULL)
 407                 goto err;
 408             sk_GENERAL_NAME_push(gens, gen); /* no failure as it was reserved */
 409         }
 410     }
 411     return gens;
 412  err:
 413     sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 414     return NULL;
 415 }
 416
 417 /*
 418  * Copy any email addresses in a certificate or request to GENERAL_NAMES
 419  */
 420
 421 static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
 422 {
 423     X509_NAME *nm;
 424     ASN1_IA5STRING *email = NULL;
 425     X509_NAME_ENTRY *ne;
 426     GENERAL_NAME *gen = NULL;
 427     int i = -1;
 428
 429     if (ctx != NULL && (ctx->flags & X509V3_CTX_TEST) != 0)
 430         return 1;
 431     if (ctx == NULL
 432         || (ctx->subject_cert == NULL && ctx->subject_req == NULL)) {
 433         ERR_raise(ERR_LIB_X509V3, X509V3_R_NO_SUBJECT_DETAILS);
 434         return 0;
 435     }
 436     /* Find the subject name */
 437     nm = ctx->subject_cert != NULL ?
 438         X509_get_subject_name(ctx->subject_cert) :
 439         X509_REQ_get_subject_name(ctx->subject_req);
 440
 441     /* Now add any email address(es) to STACK */
 442     while ((i = X509_NAME_get_index_by_NID(nm,
 443                                            NID_pkcs9_emailAddress, i)) >= 0) {
 444         ne = X509_NAME_get_entry(nm, i);
 445         email = ASN1_STRING_dup(X509_NAME_ENTRY_get_data(ne));
 446         if (move_p) {
 447             X509_NAME_delete_entry(nm, i);
 448             X509_NAME_ENTRY_free(ne);
 449             i--;
 450         }
 451         if (email == NULL || (gen = GENERAL_NAME_new()) == NULL) {
 452             ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
 453             goto err;
 454         }
 455         gen->d.ia5 = email;
 456         email = NULL;
 457         gen->type = GEN_EMAIL;
 458         if (!sk_GENERAL_NAME_push(gens, gen)) {
 459             ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
 460             goto err;
 461         }
 462         gen = NULL;
 463     }
 464
 465     return 1;
 466
 467  err:
 468     GENERAL_NAME_free(gen);
 469     ASN1_IA5STRING_free(email);
 470     return 0;
 471
 472 }
 473
 474 GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
 475                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 476 {
 477     GENERAL_NAME *gen;
 478     GENERAL_NAMES *gens;
 479     CONF_VALUE *cnf;
 480     const int num = sk_CONF_VALUE_num(nval);
 481     int i;
 482
 483     gens = sk_GENERAL_NAME_new_reserve(NULL, num);
 484     if (gens == NULL) {
 485         ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
 486         sk_GENERAL_NAME_free(gens);
 487         return NULL;
 488     }
 489
 490     for (i = 0; i < num; i++) {
 491         cnf = sk_CONF_VALUE_value(nval, i);
 492         if ((gen = v2i_GENERAL_NAME(method, ctx, cnf)) == NULL)
 493             goto err;
 494         sk_GENERAL_NAME_push(gens, gen);    /* no failure as it was reserved */
 495     }
 496     return gens;
 497  err:
 498     sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
 499     return NULL;
 500 }
 501
 502 GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method,
 503                                X509V3_CTX *ctx, CONF_VALUE *cnf)
 504 {
 505     return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
 506 }
 507
 508 GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
 509                                const X509V3_EXT_METHOD *method,
 510                                X509V3_CTX *ctx, int gen_type, const char *value,
 511                                int is_nc)
 512 {
 513     char is_string = 0;
 514     GENERAL_NAME *gen = NULL;
 515
 516     if (!value) {
 517         ERR_raise(ERR_LIB_X509V3, X509V3_R_MISSING_VALUE);
 518         return NULL;
 519     }
 520
 521     if (out)
 522         gen = out;
 523     else {
 524         gen = GENERAL_NAME_new();
 525         if (gen == NULL) {
 526             ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
 527             return NULL;
 528         }
 529     }
 530
 531     switch (gen_type) {
 532     case GEN_URI:
 533     case GEN_EMAIL:
 534     case GEN_DNS:
 535         is_string = 1;
 536         break;
 537
 538     case GEN_RID:
 539         {
 540             ASN1_OBJECT *obj;
 541             if ((obj = OBJ_txt2obj(value, 0)) == NULL) {
 542                 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_BAD_OBJECT,
 543                                "value=%s", value);
 544                 goto err;
 545             }
 546             gen->d.rid = obj;
 547         }
 548         break;
 549
 550     case GEN_IPADD:
 551         if (is_nc)
 552             gen->d.ip = a2i_IPADDRESS_NC(value);
 553         else
 554             gen->d.ip = a2i_IPADDRESS(value);
 555         if (gen->d.ip == NULL) {
 556             ERR_raise_data(ERR_LIB_X509V3, X509V3_R_BAD_IP_ADDRESS,
 557                            "value=%s", value);
 558             goto err;
 559         }
 560         break;
 561
 562     case GEN_DIRNAME:
 563         if (!do_dirname(gen, value, ctx)) {
 564             ERR_raise(ERR_LIB_X509V3, X509V3_R_DIRNAME_ERROR);
 565             goto err;
 566         }
 567         break;
 568
 569     case GEN_OTHERNAME:
 570         if (!do_othername(gen, value, ctx)) {
 571             ERR_raise(ERR_LIB_X509V3, X509V3_R_OTHERNAME_ERROR);
 572             goto err;
 573         }
 574         break;
 575     default:
 576         ERR_raise(ERR_LIB_X509V3, X509V3_R_UNSUPPORTED_TYPE);
 577         goto err;
 578     }
 579
 580     if (is_string) {
 581         if ((gen->d.ia5 = ASN1_IA5STRING_new()) == NULL ||
 582             !ASN1_STRING_set(gen->d.ia5, (unsigned char *)value,
 583                              strlen(value))) {
 584             ASN1_IA5STRING_free(gen->d.ia5);
 585             gen->d.ia5 = NULL;
 586             ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
 587             goto err;
 588         }
 589     }
 590
 591     gen->type = gen_type;
 592
 593     return gen;
 594
 595  err:
 596     if (!out)
 597         GENERAL_NAME_free(gen);
 598     return NULL;
 599 }
 600
 601 GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
 602                                   const X509V3_EXT_METHOD *method,
 603                                   X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc)
 604 {
 605     int type;
 606
 607     char *name, *value;
 608
 609     name = cnf->name;
 610     value = cnf->value;
 611
 612     if (!value) {
 613         ERR_raise(ERR_LIB_X509V3, X509V3_R_MISSING_VALUE);
 614         return NULL;
 615     }
 616
 617     if (!ossl_v3_name_cmp(name, "email"))
 618         type = GEN_EMAIL;
 619     else if (!ossl_v3_name_cmp(name, "URI"))
 620         type = GEN_URI;
 621     else if (!ossl_v3_name_cmp(name, "DNS"))
 622         type = GEN_DNS;
 623     else if (!ossl_v3_name_cmp(name, "RID"))
 624         type = GEN_RID;
 625     else if (!ossl_v3_name_cmp(name, "IP"))
 626         type = GEN_IPADD;
 627     else if (!ossl_v3_name_cmp(name, "dirName"))
 628         type = GEN_DIRNAME;
 629     else if (!ossl_v3_name_cmp(name, "otherName"))
 630         type = GEN_OTHERNAME;
 631     else {
 632         ERR_raise_data(ERR_LIB_X509V3, X509V3_R_UNSUPPORTED_OPTION,
 633                        "name=%s", name);
 634         return NULL;
 635     }
 636
 637     return a2i_GENERAL_NAME(out, method, ctx, type, value, is_nc);
 638
 639 }
 640
 641 static int do_othername(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx)
 642 {
 643     char *objtmp = NULL, *p;
 644     int objlen;
 645
 646     if ((p = strchr(value, ';')) == NULL)
 647         return 0;
 648     if ((gen->d.otherName = OTHERNAME_new()) == NULL)
 649         return 0;
 650     /*
 651      * Free this up because we will overwrite it. no need to free type_id
 652      * because it is static
 653      */
 654     ASN1_TYPE_free(gen->d.otherName->value);
 655     if ((gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)) == NULL)
 656         goto err;
 657     objlen = p - value;
 658     objtmp = OPENSSL_strndup(value, objlen);
 659     if (objtmp == NULL)
 660         goto err;
 661     gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
 662     OPENSSL_free(objtmp);
 663     if (!gen->d.otherName->type_id)
 664         goto err;
 665     return 1;
 666
 667  err:
 668     OTHERNAME_free(gen->d.otherName);
 669     gen->d.otherName = NULL;
 670     return 0;
 671 }
 672
 673 static int do_dirname(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx)
 674 {
 675     int ret = 0;
 676     STACK_OF(CONF_VALUE) *sk = NULL;
 677     X509_NAME *nm;
 678
 679     if ((nm = X509_NAME_new()) == NULL)
 680         goto err;
 681     sk = X509V3_get_section(ctx, value);
 682     if (!sk) {
 683         ERR_raise_data(ERR_LIB_X509V3, X509V3_R_SECTION_NOT_FOUND,
 684                        "section=%s", value);
 685         goto err;
 686     }
 687     /* FIXME: should allow other character types... */
 688     ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC);
 689     if (!ret)
 690         goto err;
 691     gen->d.dirn = nm;
 692
 693 err:
 694     if (ret == 0)
 695         X509_NAME_free(nm);
 696     X509V3_section_free(ctx, sk);
 697     return ret;
 698 }