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 /* extension creation utilities */
11
12 #include <stdio.h>
13 #include "crypto/ctype.h"
14 #include "internal/cryptlib.h"
15 #include <openssl/conf.h>
16 #include <openssl/x509.h>
17 #include "crypto/x509.h"
18 #include <openssl/x509v3.h>
19
20 static int v3_check_critical(const char **value);
21 static int v3_check_generic(const char **value);
22 static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
23 int crit, const char *value);
24 static X509_EXTENSION *v3_generic_extension(const char *ext, const char *value,
25 int crit, int type,
26 X509V3_CTX *ctx);
27 static char *conf_lhash_get_string(void *db, const char *section, const char *value);
28 static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, const char *section);
29 static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
30 int ext_nid, int crit, void *ext_struc);
31 static unsigned char *generic_asn1(const char *value, X509V3_CTX *ctx,
32 long *ext_len);
33
X509V3_EXT_nconf_int(CONF * conf,X509V3_CTX * ctx,const char * section,const char * name,const char * value)34 static X509_EXTENSION *X509V3_EXT_nconf_int(CONF *conf, X509V3_CTX *ctx,
35 const char *section,
36 const char *name, const char *value)
37 {
38 int crit;
39 int ext_type;
40 X509_EXTENSION *ret;
41
42 crit = v3_check_critical(&value);
43 if ((ext_type = v3_check_generic(&value)))
44 return v3_generic_extension(name, value, crit, ext_type, ctx);
45 ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
46 if (!ret) {
47 if (section != NULL)
48 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_ERROR_IN_EXTENSION,
49 "section=%s, name=%s, value=%s",
50 section, name, value);
51 else
52 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_ERROR_IN_EXTENSION,
53 "name=%s, value=%s", name, value);
54 }
55 return ret;
56 }
57
X509V3_EXT_nconf(CONF * conf,X509V3_CTX * ctx,const char * name,const char * value)58 X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, const char *name,
59 const char *value)
60 {
61 return X509V3_EXT_nconf_int(conf, ctx, NULL, name, value);
62 }
63
X509V3_EXT_nconf_nid(CONF * conf,X509V3_CTX * ctx,int ext_nid,const char * value)64 X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid,
65 const char *value)
66 {
67 int crit;
68 int ext_type;
69
70 crit = v3_check_critical(&value);
71 if ((ext_type = v3_check_generic(&value)))
72 return v3_generic_extension(OBJ_nid2sn(ext_nid),
73 value, crit, ext_type, ctx);
74 return do_ext_nconf(conf, ctx, ext_nid, crit, value);
75 }
76
77 /* CONF *conf: Config file */
78 /* char *value: Value */
do_ext_nconf(CONF * conf,X509V3_CTX * ctx,int ext_nid,int crit,const char * value)79 static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
80 int crit, const char *value)
81 {
82 const X509V3_EXT_METHOD *method;
83 X509_EXTENSION *ext;
84 STACK_OF(CONF_VALUE) *nval;
85 void *ext_struc;
86
87 if (ext_nid == NID_undef) {
88 ERR_raise(ERR_LIB_X509V3, X509V3_R_UNKNOWN_EXTENSION_NAME);
89 return NULL;
90 }
91 if ((method = X509V3_EXT_get_nid(ext_nid)) == NULL) {
92 ERR_raise(ERR_LIB_X509V3, X509V3_R_UNKNOWN_EXTENSION);
93 return NULL;
94 }
95 /* Now get internal extension representation based on type */
96 if (method->v2i) {
97 if (*value == '@')
98 nval = NCONF_get_section(conf, value + 1);
99 else
100 nval = X509V3_parse_list(value);
101 if (nval == NULL || sk_CONF_VALUE_num(nval) <= 0) {
102 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_INVALID_EXTENSION_STRING,
103 "name=%s,section=%s", OBJ_nid2sn(ext_nid), value);
104 if (*value != '@')
105 sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
106 return NULL;
107 }
108 ext_struc = method->v2i(method, ctx, nval);
109 if (*value != '@')
110 sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
111 if (!ext_struc)
112 return NULL;
113 } else if (method->s2i) {
114 if ((ext_struc = method->s2i(method, ctx, value)) == NULL)
115 return NULL;
116 } else if (method->r2i) {
117 if (!ctx->db || !ctx->db_meth) {
118 ERR_raise(ERR_LIB_X509V3, X509V3_R_NO_CONFIG_DATABASE);
119 return NULL;
120 }
121 if ((ext_struc = method->r2i(method, ctx, value)) == NULL)
122 return NULL;
123 } else {
124 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED,
125 "name=%s", OBJ_nid2sn(ext_nid));
126 return NULL;
127 }
128
129 ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
130 if (method->it)
131 ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
132 else
133 method->ext_free(ext_struc);
134 return ext;
135
136 }
137
do_ext_i2d(const X509V3_EXT_METHOD * method,int ext_nid,int crit,void * ext_struc)138 static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method,
139 int ext_nid, int crit, void *ext_struc)
140 {
141 unsigned char *ext_der = NULL;
142 int ext_len;
143 ASN1_OCTET_STRING *ext_oct = NULL;
144 X509_EXTENSION *ext;
145
146 /* Convert internal representation to DER */
147 if (method->it) {
148 ext_der = NULL;
149 ext_len =
150 ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it));
151 if (ext_len < 0)
152 goto merr;
153 } else {
154 unsigned char *p;
155
156 ext_len = method->i2d(ext_struc, NULL);
157 if (ext_len <= 0)
158 goto merr;
159 if ((ext_der = OPENSSL_malloc(ext_len)) == NULL)
160 goto merr;
161 p = ext_der;
162 method->i2d(ext_struc, &p);
163 }
164 if ((ext_oct = ASN1_OCTET_STRING_new()) == NULL)
165 goto merr;
166 ext_oct->data = ext_der;
167 ext_der = NULL;
168 ext_oct->length = ext_len;
169
170 ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
171 if (!ext)
172 goto merr;
173 ASN1_OCTET_STRING_free(ext_oct);
174
175 return ext;
176
177 merr:
178 ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
179 OPENSSL_free(ext_der);
180 ASN1_OCTET_STRING_free(ext_oct);
181 return NULL;
182
183 }
184
185 /* Given an internal structure, nid and critical flag create an extension */
186
X509V3_EXT_i2d(int ext_nid,int crit,void * ext_struc)187 X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
188 {
189 const X509V3_EXT_METHOD *method;
190
191 if ((method = X509V3_EXT_get_nid(ext_nid)) == NULL) {
192 ERR_raise(ERR_LIB_X509V3, X509V3_R_UNKNOWN_EXTENSION);
193 return NULL;
194 }
195 return do_ext_i2d(method, ext_nid, crit, ext_struc);
196 }
197
198 /* Check the extension string for critical flag */
v3_check_critical(const char ** value)199 static int v3_check_critical(const char **value)
200 {
201 const char *p = *value;
202
203 if (!CHECK_AND_SKIP_PREFIX(p, "critical,"))
204 return 0;
205 while (ossl_isspace(*p))
206 p++;
207 *value = p;
208 return 1;
209 }
210
211 /* Check extension string for generic extension and return the type */
v3_check_generic(const char ** value)212 static int v3_check_generic(const char **value)
213 {
214 int gen_type = 0;
215 const char *p = *value;
216
217 if (CHECK_AND_SKIP_PREFIX(p, "DER:")) {
218 gen_type = 1;
219 } else if (CHECK_AND_SKIP_PREFIX(p, "ASN1:")) {
220 gen_type = 2;
221 } else
222 return 0;
223
224 while (ossl_isspace(*p))
225 p++;
226 *value = p;
227 return gen_type;
228 }
229
230 /* Create a generic extension: for now just handle DER type */
v3_generic_extension(const char * ext,const char * value,int crit,int gen_type,X509V3_CTX * ctx)231 static X509_EXTENSION *v3_generic_extension(const char *ext, const char *value,
232 int crit, int gen_type,
233 X509V3_CTX *ctx)
234 {
235 unsigned char *ext_der = NULL;
236 long ext_len = 0;
237 ASN1_OBJECT *obj = NULL;
238 ASN1_OCTET_STRING *oct = NULL;
239 X509_EXTENSION *extension = NULL;
240
241 if ((obj = OBJ_txt2obj(ext, 0)) == NULL) {
242 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_EXTENSION_NAME_ERROR,
243 "name=%s", ext);
244 goto err;
245 }
246
247 if (gen_type == 1)
248 ext_der = OPENSSL_hexstr2buf(value, &ext_len);
249 else if (gen_type == 2)
250 ext_der = generic_asn1(value, ctx, &ext_len);
251
252 if (ext_der == NULL) {
253 ERR_raise_data(ERR_LIB_X509V3, X509V3_R_EXTENSION_VALUE_ERROR,
254 "value=%s", value);
255 goto err;
256 }
257
258 if ((oct = ASN1_OCTET_STRING_new()) == NULL) {
259 ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
260 goto err;
261 }
262
263 oct->data = ext_der;
264 oct->length = ext_len;
265 ext_der = NULL;
266
267 extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
268
269 err:
270 ASN1_OBJECT_free(obj);
271 ASN1_OCTET_STRING_free(oct);
272 OPENSSL_free(ext_der);
273 return extension;
274
275 }
276
generic_asn1(const char * value,X509V3_CTX * ctx,long * ext_len)277 static unsigned char *generic_asn1(const char *value, X509V3_CTX *ctx,
278 long *ext_len)
279 {
280 ASN1_TYPE *typ;
281 unsigned char *ext_der = NULL;
282
283 typ = ASN1_generate_v3(value, ctx);
284 if (typ == NULL)
285 return NULL;
286 *ext_len = i2d_ASN1_TYPE(typ, &ext_der);
287 ASN1_TYPE_free(typ);
288 return ext_der;
289 }
290
delete_ext(STACK_OF (X509_EXTENSION)* sk,X509_EXTENSION * dext)291 static void delete_ext(STACK_OF(X509_EXTENSION) *sk, X509_EXTENSION *dext)
292 {
293 int idx;
294 ASN1_OBJECT *obj;
295
296 obj = X509_EXTENSION_get_object(dext);
297 while ((idx = X509v3_get_ext_by_OBJ(sk, obj, -1)) >= 0)
298 X509_EXTENSION_free(X509v3_delete_ext(sk, idx));
299 }
300
301 /*
302 * This is the main function: add a bunch of extensions based on a config
303 * file section to an extension STACK. Just check in case sk == NULL.
304 * Note that on error new elements may have been added to *sk if sk != NULL.
305 */
X509V3_EXT_add_nconf_sk(CONF * conf,X509V3_CTX * ctx,const char * section,STACK_OF (X509_EXTENSION)** sk)306 int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, const char *section,
307 STACK_OF(X509_EXTENSION) **sk)
308 {
309 X509_EXTENSION *ext;
310 STACK_OF(CONF_VALUE) *nval;
311 const CONF_VALUE *val;
312 int i, akid = -1, skid = -1;
313
314 if ((nval = NCONF_get_section(conf, section)) == NULL)
315 return 0;
316 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
317 val = sk_CONF_VALUE_value(nval, i);
318 if (strcmp(val->name, "authorityKeyIdentifier") == 0)
319 akid = i;
320 else if (strcmp(val->name, "subjectKeyIdentifier") == 0)
321 skid = i;
322 }
323 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
324 val = sk_CONF_VALUE_value(nval, i);
325 if (skid > akid && akid >= 0) {
326 /* make sure SKID is handled before AKID */
327 if (i == akid)
328 val = sk_CONF_VALUE_value(nval, skid);
329 else if (i == skid)
330 val = sk_CONF_VALUE_value(nval, akid);
331 }
332 if ((ext = X509V3_EXT_nconf_int(conf, ctx, val->section,
333 val->name, val->value)) == NULL)
334 return 0;
335 if (sk != NULL) {
336 if (ctx->flags == X509V3_CTX_REPLACE)
337 delete_ext(*sk, ext);
338 if (X509v3_add_ext(sk, ext, -1) == NULL) {
339 X509_EXTENSION_free(ext);
340 return 0;
341 }
342 }
343 X509_EXTENSION_free(ext);
344 }
345 return 1;
346 }
347
348 /*
349 * Add extensions to a certificate. Just check in case cert == NULL.
350 * Note that on error new elements may remain added to cert if cert != NULL.
351 */
X509V3_EXT_add_nconf(CONF * conf,X509V3_CTX * ctx,const char * section,X509 * cert)352 int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, const char *section,
353 X509 *cert)
354 {
355 STACK_OF(X509_EXTENSION) **sk = NULL;
356 if (cert != NULL)
357 sk = &cert->cert_info.extensions;
358 return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
359 }
360
361 /*
362 * Add extensions to a CRL. Just check in case crl == NULL.
363 * Note that on error new elements may remain added to crl if crl != NULL.
364 */
X509V3_EXT_CRL_add_nconf(CONF * conf,X509V3_CTX * ctx,const char * section,X509_CRL * crl)365 int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, const char *section,
366 X509_CRL *crl)
367 {
368 STACK_OF(X509_EXTENSION) **sk = NULL;
369 if (crl != NULL)
370 sk = &crl->crl.extensions;
371 return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
372 }
373
374 /*
375 * Add extensions to certificate request. Just check in case req is NULL.
376 * Note that on error new elements may remain added to req if req != NULL.
377 */
X509V3_EXT_REQ_add_nconf(CONF * conf,X509V3_CTX * ctx,const char * section,X509_REQ * req)378 int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, const char *section,
379 X509_REQ *req)
380 {
381 STACK_OF(X509_EXTENSION) *exts = NULL;
382 int ret = X509V3_EXT_add_nconf_sk(conf, ctx, section, &exts);
383
384 if (ret && req != NULL && exts != NULL)
385 ret = X509_REQ_add_extensions(req, exts);
386 sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
387 return ret;
388 }
389
390 /* Config database functions */
391
X509V3_get_string(X509V3_CTX * ctx,const char * name,const char * section)392 char *X509V3_get_string(X509V3_CTX *ctx, const char *name, const char *section)
393 {
394 if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string) {
395 ERR_raise(ERR_LIB_X509V3, X509V3_R_OPERATION_NOT_DEFINED);
396 return NULL;
397 }
398 if (ctx->db_meth->get_string)
399 return ctx->db_meth->get_string(ctx->db, name, section);
400 return NULL;
401 }
402
STACK_OF(CONF_VALUE)403 STACK_OF(CONF_VALUE) *X509V3_get_section(X509V3_CTX *ctx, const char *section)
404 {
405 if (!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section) {
406 ERR_raise(ERR_LIB_X509V3, X509V3_R_OPERATION_NOT_DEFINED);
407 return NULL;
408 }
409 if (ctx->db_meth->get_section)
410 return ctx->db_meth->get_section(ctx->db, section);
411 return NULL;
412 }
413
X509V3_string_free(X509V3_CTX * ctx,char * str)414 void X509V3_string_free(X509V3_CTX *ctx, char *str)
415 {
416 if (!str)
417 return;
418 if (ctx->db_meth->free_string)
419 ctx->db_meth->free_string(ctx->db, str);
420 }
421
X509V3_section_free(X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* section)422 void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section)
423 {
424 if (!section)
425 return;
426 if (ctx->db_meth->free_section)
427 ctx->db_meth->free_section(ctx->db, section);
428 }
429
nconf_get_string(void * db,const char * section,const char * value)430 static char *nconf_get_string(void *db, const char *section, const char *value)
431 {
432 return NCONF_get_string(db, section, value);
433 }
434
STACK_OF(CONF_VALUE)435 static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, const char *section)
436 {
437 return NCONF_get_section(db, section);
438 }
439
440 static X509V3_CONF_METHOD nconf_method = {
441 nconf_get_string,
442 nconf_get_section,
443 NULL,
444 NULL
445 };
446
X509V3_set_nconf(X509V3_CTX * ctx,CONF * conf)447 void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf)
448 {
449 if (ctx == NULL) {
450 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_NULL_PARAMETER);
451 return;
452 }
453 ctx->db_meth = &nconf_method;
454 ctx->db = conf;
455 }
456
X509V3_set_ctx(X509V3_CTX * ctx,X509 * issuer,X509 * subj,X509_REQ * req,X509_CRL * crl,int flags)457 void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
458 X509_CRL *crl, int flags)
459 {
460 if (ctx == NULL) {
461 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_NULL_PARAMETER);
462 return;
463 }
464 ctx->flags = flags;
465 ctx->issuer_cert = issuer;
466 ctx->subject_cert = subj;
467 ctx->subject_req = req;
468 ctx->crl = crl;
469 ctx->db_meth = NULL;
470 ctx->db = NULL;
471 ctx->issuer_pkey = NULL;
472 }
473
474 /* For API backward compatibility, this is separate from X509V3_set_ctx() */
X509V3_set_issuer_pkey(X509V3_CTX * ctx,EVP_PKEY * pkey)475 int X509V3_set_issuer_pkey(X509V3_CTX *ctx, EVP_PKEY *pkey)
476 {
477 if (ctx == NULL) {
478 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_NULL_PARAMETER);
479 return 0;
480 }
481 if (ctx->subject_cert == NULL && pkey != NULL) {
482 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_INVALID_ARGUMENT);
483 return 0;
484 }
485 ctx->issuer_pkey = pkey;
486 return 1;
487 }
488
489 /* Old conf compatibility functions */
490
X509V3_EXT_conf(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,const char * name,const char * value)491 X509_EXTENSION *X509V3_EXT_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
492 const char *name, const char *value)
493 {
494 CONF *ctmp;
495 X509_EXTENSION *ret;
496
497 if ((ctmp = NCONF_new(NULL)) == NULL)
498 return NULL;
499 CONF_set_nconf(ctmp, conf);
500 ret = X509V3_EXT_nconf(ctmp, ctx, name, value);
501 CONF_set_nconf(ctmp, NULL);
502 NCONF_free(ctmp);
503 return ret;
504 }
505
X509V3_EXT_conf_nid(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,int ext_nid,const char * value)506 X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf,
507 X509V3_CTX *ctx, int ext_nid, const char *value)
508 {
509 CONF *ctmp;
510 X509_EXTENSION *ret;
511
512 if ((ctmp = NCONF_new(NULL)) == NULL)
513 return NULL;
514 CONF_set_nconf(ctmp, conf);
515 ret = X509V3_EXT_nconf_nid(ctmp, ctx, ext_nid, value);
516 CONF_set_nconf(ctmp, NULL);
517 NCONF_free(ctmp);
518 return ret;
519 }
520
conf_lhash_get_string(void * db,const char * section,const char * value)521 static char *conf_lhash_get_string(void *db, const char *section, const char *value)
522 {
523 return CONF_get_string(db, section, value);
524 }
525
STACK_OF(CONF_VALUE)526 static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, const char *section)
527 {
528 return CONF_get_section(db, section);
529 }
530
531 static X509V3_CONF_METHOD conf_lhash_method = {
532 conf_lhash_get_string,
533 conf_lhash_get_section,
534 NULL,
535 NULL
536 };
537
X509V3_set_conf_lhash(X509V3_CTX * ctx,LHASH_OF (CONF_VALUE)* lhash)538 void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH_OF(CONF_VALUE) *lhash)
539 {
540 if (ctx == NULL) {
541 ERR_raise(ERR_LIB_X509V3, ERR_R_PASSED_NULL_PARAMETER);
542 return;
543 }
544 ctx->db_meth = &conf_lhash_method;
545 ctx->db = lhash;
546 }
547
X509V3_EXT_add_conf(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,const char * section,X509 * cert)548 int X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
549 const char *section, X509 *cert)
550 {
551 CONF *ctmp;
552 int ret;
553
554 if ((ctmp = NCONF_new(NULL)) == NULL)
555 return 0;
556 CONF_set_nconf(ctmp, conf);
557 ret = X509V3_EXT_add_nconf(ctmp, ctx, section, cert);
558 CONF_set_nconf(ctmp, NULL);
559 NCONF_free(ctmp);
560 return ret;
561 }
562
563 /* Same as above but for a CRL */
564
X509V3_EXT_CRL_add_conf(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,const char * section,X509_CRL * crl)565 int X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
566 const char *section, X509_CRL *crl)
567 {
568 CONF *ctmp;
569 int ret;
570
571 if ((ctmp = NCONF_new(NULL)) == NULL)
572 return 0;
573 CONF_set_nconf(ctmp, conf);
574 ret = X509V3_EXT_CRL_add_nconf(ctmp, ctx, section, crl);
575 CONF_set_nconf(ctmp, NULL);
576 NCONF_free(ctmp);
577 return ret;
578 }
579
580 /* Add extensions to certificate request */
581
X509V3_EXT_REQ_add_conf(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,const char * section,X509_REQ * req)582 int X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
583 const char *section, X509_REQ *req)
584 {
585 CONF *ctmp;
586 int ret;
587
588 if ((ctmp = NCONF_new(NULL)) == NULL)
589 return 0;
590 CONF_set_nconf(ctmp, conf);
591 ret = X509V3_EXT_REQ_add_nconf(ctmp, ctx, section, req);
592 CONF_set_nconf(ctmp, NULL);
593 NCONF_free(ctmp);
594 return ret;
595 }
596
