crypto/x509v3/v3_crld.c

   1 /* v3_crld.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   4  * 1999.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 1999-2008 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61 #include "cryptlib.h"
  62 #include <openssl/conf.h>
  63 #include <openssl/asn1.h>
  64 #include <openssl/asn1t.h>
  65 #include <openssl/x509v3.h>
  66
  67 static void *v2i_crld(const X509V3_EXT_METHOD *method,
  68                       X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
  69 static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
  70                      int indent);
  71
  72 const X509V3_EXT_METHOD v3_crld = {
  73     NID_crl_distribution_points, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
  74     0, 0, 0, 0,
  75     0, 0,
  76     0,
  77     v2i_crld,
  78     i2r_crldp, 0,
  79     NULL
  80 };
  81
  82 const X509V3_EXT_METHOD v3_freshest_crl = {
  83     NID_freshest_crl, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
  84     0, 0, 0, 0,
  85     0, 0,
  86     0,
  87     v2i_crld,
  88     i2r_crldp, 0,
  89     NULL
  90 };
  91
  92 static STACK_OF(GENERAL_NAME) *gnames_from_sectname(X509V3_CTX *ctx,
  93                                                     char *sect)
  94 {
  95     STACK_OF(CONF_VALUE) *gnsect;
  96     STACK_OF(GENERAL_NAME) *gens;
  97     if (*sect == '@')
  98         gnsect = X509V3_get_section(ctx, sect + 1);
  99     else
 100         gnsect = X509V3_parse_list(sect);
 101     if (!gnsect) {
 102         X509V3err(X509V3_F_GNAMES_FROM_SECTNAME, X509V3_R_SECTION_NOT_FOUND);
 103         return NULL;
 104     }
 105     gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
 106     if (*sect == '@')
 107         X509V3_section_free(ctx, gnsect);
 108     else
 109         sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
 110     return gens;
 111 }
 112
 113 static int set_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
 114                                CONF_VALUE *cnf)
 115 {
 116     STACK_OF(GENERAL_NAME) *fnm = NULL;
 117     STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
 118     if (!strncmp(cnf->name, "fullname", 9)) {
 119         fnm = gnames_from_sectname(ctx, cnf->value);
 120         if (!fnm)
 121             goto err;
 122     } else if (!strcmp(cnf->name, "relativename")) {
 123         int ret;
 124         STACK_OF(CONF_VALUE) *dnsect;
 125         X509_NAME *nm;
 126         nm = X509_NAME_new();
 127         if (!nm)
 128             return -1;
 129         dnsect = X509V3_get_section(ctx, cnf->value);
 130         if (!dnsect) {
 131             X509V3err(X509V3_F_SET_DIST_POINT_NAME,
 132                       X509V3_R_SECTION_NOT_FOUND);
 133             return -1;
 134         }
 135         ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
 136         X509V3_section_free(ctx, dnsect);
 137         rnm = nm->entries;
 138         nm->entries = NULL;
 139         X509_NAME_free(nm);
 140         if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
 141             goto err;
 142         /*
 143          * Since its a name fragment can't have more than one RDNSequence
 144          */
 145         if (sk_X509_NAME_ENTRY_value(rnm,
 146                                      sk_X509_NAME_ENTRY_num(rnm) - 1)->set) {
 147             X509V3err(X509V3_F_SET_DIST_POINT_NAME,
 148                       X509V3_R_INVALID_MULTIPLE_RDNS);
 149             goto err;
 150         }
 151     } else
 152         return 0;
 153
 154     if (*pdp) {
 155         X509V3err(X509V3_F_SET_DIST_POINT_NAME,
 156                   X509V3_R_DISTPOINT_ALREADY_SET);
 157         goto err;
 158     }
 159
 160     *pdp = DIST_POINT_NAME_new();
 161     if (!*pdp)
 162         goto err;
 163     if (fnm) {
 164         (*pdp)->type = 0;
 165         (*pdp)->name.fullname = fnm;
 166     } else {
 167         (*pdp)->type = 1;
 168         (*pdp)->name.relativename = rnm;
 169     }
 170
 171     return 1;
 172
 173  err:
 174     if (fnm)
 175         sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
 176     if (rnm)
 177         sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
 178     return -1;
 179 }
 180
 181 static const BIT_STRING_BITNAME reason_flags[] = {
 182     {0, "Unused", "unused"},
 183     {1, "Key Compromise", "keyCompromise"},
 184     {2, "CA Compromise", "CACompromise"},
 185     {3, "Affiliation Changed", "affiliationChanged"},
 186     {4, "Superseded", "superseded"},
 187     {5, "Cessation Of Operation", "cessationOfOperation"},
 188     {6, "Certificate Hold", "certificateHold"},
 189     {7, "Privilege Withdrawn", "privilegeWithdrawn"},
 190     {8, "AA Compromise", "AACompromise"},
 191     {-1, NULL, NULL}
 192 };
 193
 194 static int set_reasons(ASN1_BIT_STRING **preas, char *value)
 195 {
 196     STACK_OF(CONF_VALUE) *rsk = NULL;
 197     const BIT_STRING_BITNAME *pbn;
 198     const char *bnam;
 199     int i, ret = 0;
 200     rsk = X509V3_parse_list(value);
 201     if (!rsk)
 202         return 0;
 203     if (*preas)
 204         return 0;
 205     for (i = 0; i < sk_CONF_VALUE_num(rsk); i++) {
 206         bnam = sk_CONF_VALUE_value(rsk, i)->name;
 207         if (!*preas) {
 208             *preas = ASN1_BIT_STRING_new();
 209             if (!*preas)
 210                 goto err;
 211         }
 212         for (pbn = reason_flags; pbn->lname; pbn++) {
 213             if (!strcmp(pbn->sname, bnam)) {
 214                 if (!ASN1_BIT_STRING_set_bit(*preas, pbn->bitnum, 1))
 215                     goto err;
 216                 break;
 217             }
 218         }
 219         if (!pbn->lname)
 220             goto err;
 221     }
 222     ret = 1;
 223
 224  err:
 225     sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
 226     return ret;
 227 }
 228
 229 static int print_reasons(BIO *out, const char *rname,
 230                          ASN1_BIT_STRING *rflags, int indent)
 231 {
 232     int first = 1;
 233     const BIT_STRING_BITNAME *pbn;
 234     BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
 235     for (pbn = reason_flags; pbn->lname; pbn++) {
 236         if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum)) {
 237             if (first)
 238                 first = 0;
 239             else
 240                 BIO_puts(out, ", ");
 241             BIO_puts(out, pbn->lname);
 242         }
 243     }
 244     if (first)
 245         BIO_puts(out, "<EMPTY>\n");
 246     else
 247         BIO_puts(out, "\n");
 248     return 1;
 249 }
 250
 251 static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
 252                                       STACK_OF(CONF_VALUE) *nval)
 253 {
 254     int i;
 255     CONF_VALUE *cnf;
 256     DIST_POINT *point = NULL;
 257     point = DIST_POINT_new();
 258     if (!point)
 259         goto err;
 260     for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 261         int ret;
 262         cnf = sk_CONF_VALUE_value(nval, i);
 263         ret = set_dist_point_name(&point->distpoint, ctx, cnf);
 264         if (ret > 0)
 265             continue;
 266         if (ret < 0)
 267             goto err;
 268         if (!strcmp(cnf->name, "reasons")) {
 269             if (!set_reasons(&point->reasons, cnf->value))
 270                 goto err;
 271         } else if (!strcmp(cnf->name, "CRLissuer")) {
 272             point->CRLissuer = gnames_from_sectname(ctx, cnf->value);
 273             if (!point->CRLissuer)
 274                 goto err;
 275         }
 276     }
 277
 278     return point;
 279
 280  err:
 281     if (point)
 282         DIST_POINT_free(point);
 283     return NULL;
 284 }
 285
 286 static void *v2i_crld(const X509V3_EXT_METHOD *method,
 287                       X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
 288 {
 289     STACK_OF(DIST_POINT) *crld = NULL;
 290     GENERAL_NAMES *gens = NULL;
 291     GENERAL_NAME *gen = NULL;
 292     CONF_VALUE *cnf;
 293     int i;
 294     if (!(crld = sk_DIST_POINT_new_null()))
 295         goto merr;
 296     for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 297         DIST_POINT *point;
 298         cnf = sk_CONF_VALUE_value(nval, i);
 299         if (!cnf->value) {
 300             STACK_OF(CONF_VALUE) *dpsect;
 301             dpsect = X509V3_get_section(ctx, cnf->name);
 302             if (!dpsect)
 303                 goto err;
 304             point = crldp_from_section(ctx, dpsect);
 305             X509V3_section_free(ctx, dpsect);
 306             if (!point)
 307                 goto err;
 308             if (!sk_DIST_POINT_push(crld, point)) {
 309                 DIST_POINT_free(point);
 310                 goto merr;
 311             }
 312         } else {
 313             if (!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
 314                 goto err;
 315             if (!(gens = GENERAL_NAMES_new()))
 316                 goto merr;
 317             if (!sk_GENERAL_NAME_push(gens, gen))
 318                 goto merr;
 319             gen = NULL;
 320             if (!(point = DIST_POINT_new()))
 321                 goto merr;
 322             if (!sk_DIST_POINT_push(crld, point)) {
 323                 DIST_POINT_free(point);
 324                 goto merr;
 325             }
 326             if (!(point->distpoint = DIST_POINT_NAME_new()))
 327                 goto merr;
 328             point->distpoint->name.fullname = gens;
 329             point->distpoint->type = 0;
 330             gens = NULL;
 331         }
 332     }
 333     return crld;
 334
 335  merr:
 336     X509V3err(X509V3_F_V2I_CRLD, ERR_R_MALLOC_FAILURE);
 337  err:
 338     GENERAL_NAME_free(gen);
 339     GENERAL_NAMES_free(gens);
 340     sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
 341     return NULL;
 342 }
 343
 344 IMPLEMENT_STACK_OF(DIST_POINT)
 345
 346 IMPLEMENT_ASN1_SET_OF(DIST_POINT)
 347
 348 static int dpn_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
 349                   void *exarg)
 350 {
 351     DIST_POINT_NAME *dpn = (DIST_POINT_NAME *)*pval;
 352
 353     switch (operation) {
 354     case ASN1_OP_NEW_POST:
 355         dpn->dpname = NULL;
 356         break;
 357
 358     case ASN1_OP_FREE_POST:
 359         if (dpn->dpname)
 360             X509_NAME_free(dpn->dpname);
 361         break;
 362     }
 363     return 1;
 364 }
 365
 366
 367 ASN1_CHOICE_cb(DIST_POINT_NAME, dpn_cb) = {
 368         ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
 369         ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
 370 } ASN1_CHOICE_END_cb(DIST_POINT_NAME, DIST_POINT_NAME, type)
 371
 372
 373 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
 374
 375 ASN1_SEQUENCE(DIST_POINT) = {
 376         ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
 377         ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
 378         ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
 379 } ASN1_SEQUENCE_END(DIST_POINT)
 380
 381 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
 382
 383 ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) =
 384         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
 385 ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
 386
 387 IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
 388
 389 ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
 390         ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
 391         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
 392         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
 393         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
 394         ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
 395         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
 396 } ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
 397
 398 IMPLEMENT_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
 399
 400 static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
 401                    int indent);
 402 static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
 403                      STACK_OF(CONF_VALUE) *nval);
 404
 405 const X509V3_EXT_METHOD v3_idp = {
 406     NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
 407     ASN1_ITEM_ref(ISSUING_DIST_POINT),
 408     0, 0, 0, 0,
 409     0, 0,
 410     0,
 411     v2i_idp,
 412     i2r_idp, 0,
 413     NULL
 414 };
 415
 416 static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
 417                      STACK_OF(CONF_VALUE) *nval)
 418 {
 419     ISSUING_DIST_POINT *idp = NULL;
 420     CONF_VALUE *cnf;
 421     char *name, *val;
 422     int i, ret;
 423     idp = ISSUING_DIST_POINT_new();
 424     if (!idp)
 425         goto merr;
 426     for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
 427         cnf = sk_CONF_VALUE_value(nval, i);
 428         name = cnf->name;
 429         val = cnf->value;
 430         ret = set_dist_point_name(&idp->distpoint, ctx, cnf);
 431         if (ret > 0)
 432             continue;
 433         if (ret < 0)
 434             goto err;
 435         if (!strcmp(name, "onlyuser")) {
 436             if (!X509V3_get_value_bool(cnf, &idp->onlyuser))
 437                 goto err;
 438         } else if (!strcmp(name, "onlyCA")) {
 439             if (!X509V3_get_value_bool(cnf, &idp->onlyCA))
 440                 goto err;
 441         } else if (!strcmp(name, "onlyAA")) {
 442             if (!X509V3_get_value_bool(cnf, &idp->onlyattr))
 443                 goto err;
 444         } else if (!strcmp(name, "indirectCRL")) {
 445             if (!X509V3_get_value_bool(cnf, &idp->indirectCRL))
 446                 goto err;
 447         } else if (!strcmp(name, "onlysomereasons")) {
 448             if (!set_reasons(&idp->onlysomereasons, val))
 449                 goto err;
 450         } else {
 451             X509V3err(X509V3_F_V2I_IDP, X509V3_R_INVALID_NAME);
 452             X509V3_conf_err(cnf);
 453             goto err;
 454         }
 455     }
 456     return idp;
 457
 458  merr:
 459     X509V3err(X509V3_F_V2I_IDP, ERR_R_MALLOC_FAILURE);
 460  err:
 461     ISSUING_DIST_POINT_free(idp);
 462     return NULL;
 463 }
 464
 465 static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
 466 {
 467     int i;
 468     for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
 469         BIO_printf(out, "%*s", indent + 2, "");
 470         GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
 471         BIO_puts(out, "\n");
 472     }
 473     return 1;
 474 }
 475
 476 static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
 477 {
 478     if (dpn->type == 0) {
 479         BIO_printf(out, "%*sFull Name:\n", indent, "");
 480         print_gens(out, dpn->name.fullname, indent);
 481     } else {
 482         X509_NAME ntmp;
 483         ntmp.entries = dpn->name.relativename;
 484         BIO_printf(out, "%*sRelative Name:\n%*s", indent, "", indent + 2, "");
 485         X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
 486         BIO_puts(out, "\n");
 487     }
 488     return 1;
 489 }
 490
 491 static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
 492                    int indent)
 493 {
 494     ISSUING_DIST_POINT *idp = pidp;
 495     if (idp->distpoint)
 496         print_distpoint(out, idp->distpoint, indent);
 497     if (idp->onlyuser > 0)
 498         BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
 499     if (idp->onlyCA > 0)
 500         BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
 501     if (idp->indirectCRL > 0)
 502         BIO_printf(out, "%*sIndirect CRL\n", indent, "");
 503     if (idp->onlysomereasons)
 504         print_reasons(out, "Only Some Reasons", idp->onlysomereasons, indent);
 505     if (idp->onlyattr > 0)
 506         BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
 507     if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
 508         && (idp->indirectCRL <= 0) && !idp->onlysomereasons
 509         && (idp->onlyattr <= 0))
 510         BIO_printf(out, "%*s<EMPTY>\n", indent, "");
 511
 512     return 1;
 513 }
 514
 515 static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
 516                      int indent)
 517 {
 518     STACK_OF(DIST_POINT) *crld = pcrldp;
 519     DIST_POINT *point;
 520     int i;
 521     for (i = 0; i < sk_DIST_POINT_num(crld); i++) {
 522         BIO_puts(out, "\n");
 523         point = sk_DIST_POINT_value(crld, i);
 524         if (point->distpoint)
 525             print_distpoint(out, point->distpoint, indent);
 526         if (point->reasons)
 527             print_reasons(out, "Reasons", point->reasons, indent);
 528         if (point->CRLissuer) {
 529             BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
 530             print_gens(out, point->CRLissuer, indent);
 531         }
 532     }
 533     return 1;
 534 }
 535
 536 int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname)
 537 {
 538     int i;
 539     STACK_OF(X509_NAME_ENTRY) *frag;
 540     X509_NAME_ENTRY *ne;
 541     if (!dpn || (dpn->type != 1))
 542         return 1;
 543     frag = dpn->name.relativename;
 544     dpn->dpname = X509_NAME_dup(iname);
 545     if (!dpn->dpname)
 546         return 0;
 547     for (i = 0; i < sk_X509_NAME_ENTRY_num(frag); i++) {
 548         ne = sk_X509_NAME_ENTRY_value(frag, i);
 549         if (!X509_NAME_add_entry(dpn->dpname, ne, -1, i ? 0 : 1)) {
 550             X509_NAME_free(dpn->dpname);
 551             dpn->dpname = NULL;
 552             return 0;
 553         }
 554     }
 555     /* generate cached encoding of name */
 556     if (i2d_X509_NAME(dpn->dpname, NULL) < 0) {
 557         X509_NAME_free(dpn->dpname);
 558         dpn->dpname = NULL;
 559         return 0;
 560     }
 561     return 1;
 562 }