Type-checked (and modern C compliant) OBJ_bsearch.
[openssl.git] / crypto / x509v3 / v3_crld.c
1 /* v3_crld.c */
2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3  * project 1999.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999-2008 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/asn1.h>
63 #include <openssl/asn1t.h>
64 #include <openssl/x509v3.h>
65
66 static void *v2i_crld(const X509V3_EXT_METHOD *method,
67                       X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
68 static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
69                      int indent);
70
71 const X509V3_EXT_METHOD v3_crld =
72         {
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         {
84         NID_freshest_crl, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
85         0,0,0,0,
86         0,0,
87         0,
88         v2i_crld,
89         i2r_crldp,0,
90         NULL
91         };
92
93 static STACK_OF(GENERAL_NAME) *gnames_from_sectname(X509V3_CTX *ctx, 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                 {
103                 X509V3err(X509V3_F_GNAMES_FROM_SECTNAME,
104                                                 X509V3_R_SECTION_NOT_FOUND);
105                 return NULL;
106                 }
107         gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
108         if (*sect == '@')
109                 X509V3_section_free(ctx, gnsect);
110         else
111                 sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
112         return gens;
113         }
114
115 static int set_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
116                                                         CONF_VALUE *cnf)
117         {
118         STACK_OF(GENERAL_NAME) *fnm = NULL;
119         STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
120         if (!strncmp(cnf->name, "fullname", 9))
121                 {
122                 fnm = gnames_from_sectname(ctx, cnf->value);
123                 if (!fnm)
124                         goto err;
125                 }
126         else if (!strcmp(cnf->name, "relativename"))
127                 {
128                 int ret;
129                 STACK_OF(CONF_VALUE) *dnsect;
130                 X509_NAME *nm;
131                 nm = X509_NAME_new();
132                 if (!nm)
133                         return -1;
134                 dnsect = X509V3_get_section(ctx, cnf->value);
135                 if (!dnsect)
136                         {
137                         X509V3err(X509V3_F_SET_DIST_POINT_NAME,
138                                                 X509V3_R_SECTION_NOT_FOUND);
139                         return -1;
140                         }
141                 ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
142                 X509V3_section_free(ctx, dnsect);
143                 rnm = nm->entries;
144                 nm->entries = NULL;
145                 X509_NAME_free(nm);
146                 if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
147                         goto err;
148                 /* Since its a name fragment can't have more than one
149                  * RDNSequence
150                  */
151                 if (sk_X509_NAME_ENTRY_value(rnm,
152                                 sk_X509_NAME_ENTRY_num(rnm) - 1)->set)
153                         {
154                         X509V3err(X509V3_F_SET_DIST_POINT_NAME,
155                                                 X509V3_R_INVAID_MULTIPLE_RDNS);
156                         goto err;
157                         }
158                 }
159         else
160                 return 0;
161
162         if (*pdp)
163                 {
164                 X509V3err(X509V3_F_SET_DIST_POINT_NAME,
165                                                 X509V3_R_DISTPOINT_ALREADY_SET);
166                 goto err;
167                 }
168
169         *pdp = DIST_POINT_NAME_new();
170         if (!*pdp)
171                 goto err;
172         if (fnm)
173                 {
174                 (*pdp)->type = 0;
175                 (*pdp)->name.fullname = fnm;
176                 }
177         else
178                 {
179                 (*pdp)->type = 1;
180                 (*pdp)->name.relativename = rnm;
181                 }
182
183         return 1;
184                 
185         err:
186         if (fnm)
187                 sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
188         if (rnm)
189                 sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
190         return -1;
191         }
192
193 static const BIT_STRING_BITNAME reason_flags[] = {
194 {0, "Unused", "unused"},
195 {1, "Key Compromise", "keyCompromise"},
196 {2, "CA Compromise", "CACompromise"},
197 {3, "Affiliation Changed", "affiliationChanged"},
198 {4, "Superseded", "superseded"},
199 {5, "Cessation Of Operation", "cessationOfOperation"},
200 {6, "Certificate Hold", "certificateHold"},
201 {7, "Privilege Withdrawn", "privilegeWithdrawn"},
202 {8, "AA Compromise", "AACompromise"},
203 {-1, NULL, NULL}
204 };
205
206 static int set_reasons(ASN1_BIT_STRING **preas, char *value)
207         {
208         STACK_OF(CONF_VALUE) *rsk = NULL;
209         const BIT_STRING_BITNAME *pbn;
210         const char *bnam;
211         int i, ret = 0;
212         rsk = X509V3_parse_list(value);
213         if (!rsk)
214                 return 0;
215         if (*preas)
216                 return 0;
217         for (i = 0; i < sk_CONF_VALUE_num(rsk); i++)
218                 {
219                 bnam = sk_CONF_VALUE_value(rsk, i)->name;
220                 if (!*preas)
221                         {
222                         *preas = ASN1_BIT_STRING_new();
223                         if (!*preas)
224                                 goto err;
225                         }
226                 for (pbn = reason_flags; pbn->lname; pbn++)
227                         {
228                         if (!strcmp(pbn->sname, bnam))
229                                 {
230                                 if (!ASN1_BIT_STRING_set_bit(*preas,
231                                                         pbn->bitnum, 1))
232                                         goto err;
233                                 break;
234                                 }
235                         }
236                 if (!pbn->lname)
237                         goto err;
238                 }
239         ret = 1;
240
241         err:
242         sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
243         return ret;
244         }
245
246 static int print_reasons(BIO *out, const char *rname,
247                         ASN1_BIT_STRING *rflags, int indent)
248         {
249         int first = 1;
250         const BIT_STRING_BITNAME *pbn;
251         BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
252         for (pbn = reason_flags; pbn->lname; pbn++)
253                 {
254                 if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum))
255                         {
256                         if (first)
257                                 first = 0;
258                         else
259                                 BIO_puts(out, ", ");
260                         BIO_puts(out, pbn->lname);
261                         }
262                 }
263         if (first)
264                 BIO_puts(out, "<EMPTY>\n");
265         else
266                 BIO_puts(out, "\n");
267         return 1;
268         }
269
270 static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
271                                                 STACK_OF(CONF_VALUE) *nval)
272         {
273         int i;
274         CONF_VALUE *cnf;
275         DIST_POINT *point = NULL;
276         point = DIST_POINT_new();
277         if (!point)
278                 goto err;
279         for(i = 0; i < sk_CONF_VALUE_num(nval); i++)
280                 {
281                 int ret;
282                 cnf = sk_CONF_VALUE_value(nval, i);
283                 ret = set_dist_point_name(&point->distpoint, ctx, cnf);
284                 if (ret > 0)
285                         continue;
286                 if (ret < 0)
287                         goto err;
288                 if (!strcmp(cnf->name, "reasons"))
289                         {
290                         if (!set_reasons(&point->reasons, cnf->value))
291                                 goto err;
292                         }
293                 else if (!strcmp(cnf->name, "CRLissuer"))
294                         {
295                         point->CRLissuer =
296                                 gnames_from_sectname(ctx, cnf->value);
297                         if (!point->CRLissuer)
298                                 goto err;
299                         }
300                 }
301
302         return point;
303                         
304
305         err:
306         if (point)
307                 DIST_POINT_free(point);
308         return NULL;
309         }
310
311 static void *v2i_crld(const X509V3_EXT_METHOD *method,
312                       X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
313         {
314         STACK_OF(DIST_POINT) *crld = NULL;
315         GENERAL_NAMES *gens = NULL;
316         GENERAL_NAME *gen = NULL;
317         CONF_VALUE *cnf;
318         int i;
319         if(!(crld = sk_DIST_POINT_new_null())) goto merr;
320         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
321                 DIST_POINT *point;
322                 cnf = sk_CONF_VALUE_value(nval, i);
323                 if (!cnf->value)
324                         {
325                         STACK_OF(CONF_VALUE) *dpsect;
326                         dpsect = X509V3_get_section(ctx, cnf->name);
327                         if (!dpsect)
328                                 goto err;
329                         point = crldp_from_section(ctx, dpsect);
330                         X509V3_section_free(ctx, dpsect);
331                         if (!point)
332                                 goto err;
333                         if(!sk_DIST_POINT_push(crld, point))
334                                 {
335                                 DIST_POINT_free(point);
336                                 goto merr;
337                                 }
338                         }
339                 else
340                         {
341                         if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
342                                 goto err; 
343                         if(!(gens = GENERAL_NAMES_new()))
344                                 goto merr;
345                         if(!sk_GENERAL_NAME_push(gens, gen))
346                                 goto merr;
347                         gen = NULL;
348                         if(!(point = DIST_POINT_new()))
349                                 goto merr;
350                         if(!sk_DIST_POINT_push(crld, point))
351                                 {
352                                 DIST_POINT_free(point);
353                                 goto merr;
354                                 }
355                         if(!(point->distpoint = DIST_POINT_NAME_new()))
356                                 goto merr;
357                         point->distpoint->name.fullname = gens;
358                         point->distpoint->type = 0;
359                         gens = NULL;
360                         }
361         }
362         return crld;
363
364         merr:
365         X509V3err(X509V3_F_V2I_CRLD,ERR_R_MALLOC_FAILURE);
366         err:
367         GENERAL_NAME_free(gen);
368         GENERAL_NAMES_free(gens);
369         sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
370         return NULL;
371 }
372
373 IMPLEMENT_STACK_OF(DIST_POINT)
374 IMPLEMENT_ASN1_SET_OF(DIST_POINT)
375
376 static int dpn_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
377                                                                 void *exarg)
378         {
379         DIST_POINT_NAME *dpn = (DIST_POINT_NAME *)*pval;
380
381         switch(operation)
382                 {
383                 case ASN1_OP_NEW_POST:
384                 dpn->dpname = NULL;
385                 break;
386
387                 case ASN1_OP_FREE_POST:
388                 if (dpn->dpname)
389                         X509_NAME_free(dpn->dpname);
390                 break;
391                 }
392         return 1;
393         }
394
395
396 ASN1_CHOICE_cb(DIST_POINT_NAME, dpn_cb) = {
397         ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
398         ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
399 } ASN1_CHOICE_END_cb(DIST_POINT_NAME, DIST_POINT_NAME, type)
400
401
402 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
403
404 ASN1_SEQUENCE(DIST_POINT) = {
405         ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
406         ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
407         ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
408 } ASN1_SEQUENCE_END(DIST_POINT)
409
410 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
411
412 ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) = 
413         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
414 ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
415
416 IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
417
418 ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
419         ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
420         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
421         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
422         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
423         ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
424         ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
425 } ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
426
427 IMPLEMENT_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
428
429 static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
430                    int indent);
431 static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
432                      STACK_OF(CONF_VALUE) *nval);
433
434 const X509V3_EXT_METHOD v3_idp =
435         {
436         NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
437         ASN1_ITEM_ref(ISSUING_DIST_POINT),
438         0,0,0,0,
439         0,0,
440         0,
441         v2i_idp,
442         i2r_idp,0,
443         NULL
444         };
445
446 static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
447                      STACK_OF(CONF_VALUE) *nval)
448         {
449         ISSUING_DIST_POINT *idp = NULL;
450         CONF_VALUE *cnf;
451         char *name, *val;
452         int i, ret;
453         idp = ISSUING_DIST_POINT_new();
454         if (!idp)
455                 goto merr;
456         for(i = 0; i < sk_CONF_VALUE_num(nval); i++)
457                 {
458                 cnf = sk_CONF_VALUE_value(nval, i);
459                 name = cnf->name;
460                 val = cnf->value;
461                 ret = set_dist_point_name(&idp->distpoint, ctx, cnf);
462                 if (ret > 0)
463                         continue;
464                 if (ret < 0)
465                         goto err;
466                 if (!strcmp(name, "onlyuser"))
467                         {
468                         if (!X509V3_get_value_bool(cnf, &idp->onlyuser))
469                                 goto err;
470                         }
471                 else if (!strcmp(name, "onlyCA"))
472                         {
473                         if (!X509V3_get_value_bool(cnf, &idp->onlyCA))
474                                 goto err;
475                         }
476                 else if (!strcmp(name, "onlyAA"))
477                         {
478                         if (!X509V3_get_value_bool(cnf, &idp->onlyattr))
479                                 goto err;
480                         }
481                 else if (!strcmp(name, "indirectCRL"))
482                         {
483                         if (!X509V3_get_value_bool(cnf, &idp->indirectCRL))
484                                 goto err;
485                         }
486                 else if (!strcmp(name, "onlysomereasons"))
487                         {
488                         if (!set_reasons(&idp->onlysomereasons, val))
489                                 goto err;
490                         }
491                 else
492                         {
493                         X509V3err(X509V3_F_V2I_IDP, X509V3_R_INVALID_NAME);
494                         X509V3_conf_err(cnf);
495                         goto err;
496                         }
497                 }
498         return idp;
499
500         merr:
501         X509V3err(X509V3_F_V2I_IDP,ERR_R_MALLOC_FAILURE);
502         err:
503         ISSUING_DIST_POINT_free(idp);
504         return NULL;
505         }
506
507 static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
508         {
509         int i;
510         for (i = 0; i < sk_GENERAL_NAME_num(gens); i++)
511                 {
512                 BIO_printf(out, "%*s", indent + 2, "");
513                 GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
514                 BIO_puts(out, "\n");
515                 }
516         return 1;
517         }
518
519 static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
520         {
521         if (dpn->type == 0)
522                 {
523                 BIO_printf(out, "%*sFull Name:\n", indent, "");
524                 print_gens(out, dpn->name.fullname, indent);
525                 }
526         else
527                 {
528                 X509_NAME ntmp;
529                 ntmp.entries = dpn->name.relativename;
530                 BIO_printf(out, "%*sRelative Name:\n%*s",
531                                                 indent, "", indent + 2, "");
532                 X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
533                 BIO_puts(out, "\n");
534                 }
535         return 1;
536         }
537
538 static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
539                    int indent)
540         {
541         ISSUING_DIST_POINT *idp = pidp;
542         if (idp->distpoint)
543                 print_distpoint(out, idp->distpoint, indent);
544         if (idp->onlyuser > 0)
545                 BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
546         if (idp->onlyCA > 0)
547                 BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
548         if (idp->indirectCRL > 0)
549                 BIO_printf(out, "%*sIndirect CRL\n", indent, "");
550         if (idp->onlysomereasons)
551                 print_reasons(out, "Only Some Reasons", 
552                                 idp->onlysomereasons, indent);
553         if (idp->onlyattr > 0)
554                 BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
555         if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
556                 && (idp->indirectCRL <= 0) && !idp->onlysomereasons
557                 && (idp->onlyattr <= 0))
558                 BIO_printf(out, "%*s<EMPTY>\n", indent, "");
559                 
560         return 1;
561         }
562
563 static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
564                      int indent)
565         {
566         STACK_OF(DIST_POINT) *crld = pcrldp;
567         DIST_POINT *point;
568         int i;
569         for(i = 0; i < sk_DIST_POINT_num(crld); i++)
570                 {
571                 BIO_puts(out, "\n");
572                 point = sk_DIST_POINT_value(crld, i);
573                 if(point->distpoint)
574                         print_distpoint(out, point->distpoint, indent);
575                 if(point->reasons) 
576                         print_reasons(out, "Reasons", point->reasons,
577                                                                 indent);
578                 if(point->CRLissuer)
579                         {
580                         BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
581                         print_gens(out, point->CRLissuer, indent);
582                         }
583                 }
584         return 1;
585         }
586
587 int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname)
588         {
589         int i;
590         STACK_OF(X509_NAME_ENTRY) *frag;
591         X509_NAME_ENTRY *ne;
592         if (!dpn || (dpn->type != 1))
593                 return 1;
594         frag = dpn->name.relativename;
595         dpn->dpname = X509_NAME_dup(iname);
596         if (!dpn->dpname)
597                 return 0;
598         for (i = 0; i < sk_X509_NAME_ENTRY_num(frag); i++)
599                 {
600                 ne = sk_X509_NAME_ENTRY_value(frag, i);
601                 if (!X509_NAME_add_entry(dpn->dpname, ne, -1, i ? 0 : 1))
602                         {
603                         X509_NAME_free(dpn->dpname);
604                         dpn->dpname = NULL;
605                         return 0;
606                         }
607                 }
608         /* generate cached encoding of name */
609         if (i2d_X509_NAME(dpn->dpname, NULL) < 0)
610                 {
611                 X509_NAME_free(dpn->dpname);
612                 dpn->dpname = NULL;
613                 return 0;
614                 }
615         return 1;
616         }