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1 /* v3_conf.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3  * project 1999.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999-2002 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 /* extension creation utilities */
59 
60 
61 
62 #include <stdio.h>
63 #include <ctype.h>
64 #include "cryptlib.h"
65 #include <openssl/conf.h>
66 #include <openssl/x509.h>
67 #include <openssl/x509v3.h>
68 
69 static int v3_check_critical(char **value);
70 static int v3_check_generic(char **value);
71 static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid, int crit, char *value);
72 static X509_EXTENSION *v3_generic_extension(const char *ext, char *value, int crit, int type, X509V3_CTX *ctx);
73 static char *conf_lhash_get_string(void *db, char *section, char *value);
74 static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, char *section);
75 static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid,
76 				  int crit, void *ext_struc);
77 static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx, long *ext_len);
78 /* CONF *conf:  Config file    */
79 /* char *name:  Name    */
80 /* char *value:  Value    */
X509V3_EXT_nconf(CONF * conf,X509V3_CTX * ctx,char * name,char * value)81 X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name,
82 				 char *value)
83 	{
84 	int crit;
85 	int ext_type;
86 	X509_EXTENSION *ret;
87 	crit = v3_check_critical(&value);
88 	if ((ext_type = v3_check_generic(&value)))
89 		return v3_generic_extension(name, value, crit, ext_type, ctx);
90 	ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
91 	if (!ret)
92 		{
93 		X509V3err(X509V3_F_X509V3_EXT_NCONF,X509V3_R_ERROR_IN_EXTENSION);
94 		ERR_add_error_data(4,"name=", name, ", value=", value);
95 		}
96 	return ret;
97 	}
98 
99 /* CONF *conf:  Config file    */
100 /* char *value:  Value    */
X509V3_EXT_nconf_nid(CONF * conf,X509V3_CTX * ctx,int ext_nid,char * value)101 X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid,
102 				     char *value)
103 	{
104 	int crit;
105 	int ext_type;
106 	crit = v3_check_critical(&value);
107 	if ((ext_type = v3_check_generic(&value)))
108 		return v3_generic_extension(OBJ_nid2sn(ext_nid),
109 						 value, crit, ext_type, ctx);
110 	return do_ext_nconf(conf, ctx, ext_nid, crit, value);
111 	}
112 
113 /* CONF *conf:  Config file    */
114 /* char *value:  Value    */
do_ext_nconf(CONF * conf,X509V3_CTX * ctx,int ext_nid,int crit,char * value)115 static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
116 				    int crit, char *value)
117 	{
118 	const X509V3_EXT_METHOD *method;
119 	X509_EXTENSION *ext;
120 	STACK_OF(CONF_VALUE) *nval;
121 	void *ext_struc;
122 	if (ext_nid == NID_undef)
123 		{
124 		X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION_NAME);
125 		return NULL;
126 		}
127 	if (!(method = X509V3_EXT_get_nid(ext_nid)))
128 		{
129 		X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION);
130 		return NULL;
131 		}
132 	/* Now get internal extension representation based on type */
133 	if (method->v2i)
134 		{
135 		if(*value == '@') nval = NCONF_get_section(conf, value + 1);
136 		else nval = X509V3_parse_list(value);
137 		if(sk_CONF_VALUE_num(nval) <= 0)
138 			{
139 			X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_INVALID_EXTENSION_STRING);
140 			ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=", value);
141 			return NULL;
142 			}
143 		ext_struc = method->v2i(method, ctx, nval);
144 		if(*value != '@') sk_CONF_VALUE_pop_free(nval,
145 							 X509V3_conf_free);
146 		if(!ext_struc) return NULL;
147 		}
148 	else if(method->s2i)
149 		{
150 		if(!(ext_struc = method->s2i(method, ctx, value))) return NULL;
151 		}
152 	else if(method->r2i)
153 		{
154 		if(!ctx->db || !ctx->db_meth)
155 			{
156 			X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_NO_CONFIG_DATABASE);
157 			return NULL;
158 			}
159 		if(!(ext_struc = method->r2i(method, ctx, value))) return NULL;
160 		}
161 	else
162 		{
163 		X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
164 		ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
165 		return NULL;
166 		}
167 
168 	ext  = do_ext_i2d(method, ext_nid, crit, ext_struc);
169 	if(method->it) ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
170 	else method->ext_free(ext_struc);
171 	return ext;
172 
173 	}
174 
do_ext_i2d(const X509V3_EXT_METHOD * method,int ext_nid,int crit,void * ext_struc)175 static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid,
176 				  int crit, void *ext_struc)
177 	{
178 	unsigned char *ext_der;
179 	int ext_len;
180 	ASN1_OCTET_STRING *ext_oct;
181 	X509_EXTENSION *ext;
182 	/* Convert internal representation to DER */
183 	if (method->it)
184 		{
185 		ext_der = NULL;
186 		ext_len = ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it));
187 		if (ext_len < 0) goto merr;
188 		}
189 	 else
190 		{
191 		unsigned char *p;
192 		ext_len = method->i2d(ext_struc, NULL);
193 		if(!(ext_der = OPENSSL_malloc(ext_len))) goto merr;
194 		p = ext_der;
195 		method->i2d(ext_struc, &p);
196 		}
197 	if (!(ext_oct = M_ASN1_OCTET_STRING_new())) goto merr;
198 	ext_oct->data = ext_der;
199 	ext_oct->length = ext_len;
200 
201 	ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
202 	if (!ext) goto merr;
203 	M_ASN1_OCTET_STRING_free(ext_oct);
204 
205 	return ext;
206 
207 	merr:
208 	X509V3err(X509V3_F_DO_EXT_I2D,ERR_R_MALLOC_FAILURE);
209 	return NULL;
210 
211 	}
212 
213 /* Given an internal structure, nid and critical flag create an extension */
214 
X509V3_EXT_i2d(int ext_nid,int crit,void * ext_struc)215 X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
216 	{
217 	const X509V3_EXT_METHOD *method;
218 	if (!(method = X509V3_EXT_get_nid(ext_nid))) {
219 		X509V3err(X509V3_F_X509V3_EXT_I2D,X509V3_R_UNKNOWN_EXTENSION);
220 		return NULL;
221 	}
222 	return do_ext_i2d(method, ext_nid, crit, ext_struc);
223 }
224 
225 /* Check the extension string for critical flag */
v3_check_critical(char ** value)226 static int v3_check_critical(char **value)
227 {
228 	char *p = *value;
229 	if ((strlen(p) < 9) || strncmp(p, "critical,", 9)) return 0;
230 	p+=9;
231 	while(isspace((unsigned char)*p)) p++;
232 	*value = p;
233 	return 1;
234 }
235 
236 /* Check extension string for generic extension and return the type */
v3_check_generic(char ** value)237 static int v3_check_generic(char **value)
238 {
239 	int gen_type = 0;
240 	char *p = *value;
241 	if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4))
242 		{
243 		p+=4;
244 		gen_type = 1;
245 		}
246 	else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5))
247 		{
248 		p+=5;
249 		gen_type = 2;
250 		}
251 	else
252 		return 0;
253 
254 	while (isspace((unsigned char)*p)) p++;
255 	*value = p;
256 	return gen_type;
257 }
258 
259 /* Create a generic extension: for now just handle DER type */
v3_generic_extension(const char * ext,char * value,int crit,int gen_type,X509V3_CTX * ctx)260 static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
261 					    int crit, int gen_type,
262 					    X509V3_CTX *ctx)
263 	{
264 	unsigned char *ext_der=NULL;
265 	long ext_len;
266 	ASN1_OBJECT *obj=NULL;
267 	ASN1_OCTET_STRING *oct=NULL;
268 	X509_EXTENSION *extension=NULL;
269 	if (!(obj = OBJ_txt2obj(ext, 0)))
270 		{
271 		X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_NAME_ERROR);
272 		ERR_add_error_data(2, "name=", ext);
273 		goto err;
274 		}
275 
276 	if (gen_type == 1)
277 		ext_der = string_to_hex(value, &ext_len);
278 	else if (gen_type == 2)
279 		ext_der = generic_asn1(value, ctx, &ext_len);
280 
281 	if (ext_der == NULL)
282 		{
283 		X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_VALUE_ERROR);
284 		ERR_add_error_data(2, "value=", value);
285 		goto err;
286 		}
287 
288 	if (!(oct = M_ASN1_OCTET_STRING_new()))
289 		{
290 		X509V3err(X509V3_F_V3_GENERIC_EXTENSION,ERR_R_MALLOC_FAILURE);
291 		goto err;
292 		}
293 
294 	oct->data = ext_der;
295 	oct->length = ext_len;
296 	ext_der = NULL;
297 
298 	extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
299 
300 	err:
301 	ASN1_OBJECT_free(obj);
302 	M_ASN1_OCTET_STRING_free(oct);
303 	if(ext_der) OPENSSL_free(ext_der);
304 	return extension;
305 
306 	}
307 
generic_asn1(char * value,X509V3_CTX * ctx,long * ext_len)308 static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx, long *ext_len)
309 	{
310 	ASN1_TYPE *typ;
311 	unsigned char *ext_der = NULL;
312 	typ = ASN1_generate_v3(value, ctx);
313 	if (typ == NULL)
314 		return NULL;
315 	*ext_len = i2d_ASN1_TYPE(typ, &ext_der);
316 	ASN1_TYPE_free(typ);
317 	return ext_der;
318 	}
319 
320 /* This is the main function: add a bunch of extensions based on a config file
321  * section to an extension STACK.
322  */
323 
324 
X509V3_EXT_add_nconf_sk(CONF * conf,X509V3_CTX * ctx,char * section,STACK_OF (X509_EXTENSION)** sk)325 int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section,
326 			    STACK_OF(X509_EXTENSION) **sk)
327 	{
328 	X509_EXTENSION *ext;
329 	STACK_OF(CONF_VALUE) *nval;
330 	CONF_VALUE *val;
331 	int i;
332 	if (!(nval = NCONF_get_section(conf, section))) return 0;
333 	for (i = 0; i < sk_CONF_VALUE_num(nval); i++)
334 		{
335 		val = sk_CONF_VALUE_value(nval, i);
336 		if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)))
337 								return 0;
338 		if (sk) X509v3_add_ext(sk, ext, -1);
339 		X509_EXTENSION_free(ext);
340 		}
341 	return 1;
342 	}
343 
344 /* Convenience functions to add extensions to a certificate, CRL and request */
345 
X509V3_EXT_add_nconf(CONF * conf,X509V3_CTX * ctx,char * section,X509 * cert)346 int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
347 			 X509 *cert)
348 	{
349 	STACK_OF(X509_EXTENSION) **sk = NULL;
350 	if (cert)
351 		sk = &cert->cert_info->extensions;
352 	return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
353 	}
354 
355 /* Same as above but for a CRL */
356 
X509V3_EXT_CRL_add_nconf(CONF * conf,X509V3_CTX * ctx,char * section,X509_CRL * crl)357 int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
358 			     X509_CRL *crl)
359 	{
360 	STACK_OF(X509_EXTENSION) **sk = NULL;
361 	if (crl)
362 		sk = &crl->crl->extensions;
363 	return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
364 	}
365 
366 /* Add extensions to certificate request */
367 
X509V3_EXT_REQ_add_nconf(CONF * conf,X509V3_CTX * ctx,char * section,X509_REQ * req)368 int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
369 	     X509_REQ *req)
370 	{
371 	STACK_OF(X509_EXTENSION) *extlist = NULL, **sk = NULL;
372 	int i;
373 	if (req)
374 		sk = &extlist;
375 	i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
376 	if (!i || !sk)
377 		return i;
378 	i = X509_REQ_add_extensions(req, extlist);
379 	sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
380 	return i;
381 	}
382 
383 /* Config database functions */
384 
X509V3_get_string(X509V3_CTX * ctx,char * name,char * section)385 char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section)
386 	{
387 	if(!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string)
388 		{
389 		X509V3err(X509V3_F_X509V3_GET_STRING,X509V3_R_OPERATION_NOT_DEFINED);
390 		return NULL;
391 		}
392 	if (ctx->db_meth->get_string)
393 			return ctx->db_meth->get_string(ctx->db, name, section);
394 	return NULL;
395 	}
396 
STACK_OF(CONF_VALUE)397 STACK_OF(CONF_VALUE) * X509V3_get_section(X509V3_CTX *ctx, char *section)
398 	{
399 	if(!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section)
400 		{
401 		X509V3err(X509V3_F_X509V3_GET_SECTION,X509V3_R_OPERATION_NOT_DEFINED);
402 		return NULL;
403 		}
404 	if (ctx->db_meth->get_section)
405 			return ctx->db_meth->get_section(ctx->db, section);
406 	return NULL;
407 	}
408 
X509V3_string_free(X509V3_CTX * ctx,char * str)409 void X509V3_string_free(X509V3_CTX *ctx, char *str)
410 	{
411 	if (!str) return;
412 	if (ctx->db_meth->free_string)
413 			ctx->db_meth->free_string(ctx->db, str);
414 	}
415 
X509V3_section_free(X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* section)416 void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section)
417 	{
418 	if (!section) return;
419 	if (ctx->db_meth->free_section)
420 			ctx->db_meth->free_section(ctx->db, section);
421 	}
422 
nconf_get_string(void * db,char * section,char * value)423 static char *nconf_get_string(void *db, char *section, char *value)
424 	{
425 	return NCONF_get_string(db, section, value);
426 	}
427 
STACK_OF(CONF_VALUE)428 static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, char *section)
429 	{
430 	return NCONF_get_section(db, section);
431 	}
432 
433 static X509V3_CONF_METHOD nconf_method = {
434 nconf_get_string,
435 nconf_get_section,
436 NULL,
437 NULL
438 };
439 
X509V3_set_nconf(X509V3_CTX * ctx,CONF * conf)440 void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf)
441 	{
442 	ctx->db_meth = &nconf_method;
443 	ctx->db = conf;
444 	}
445 
X509V3_set_ctx(X509V3_CTX * ctx,X509 * issuer,X509 * subj,X509_REQ * req,X509_CRL * crl,int flags)446 void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
447 		    X509_CRL *crl, int flags)
448 	{
449 	ctx->issuer_cert = issuer;
450 	ctx->subject_cert = subj;
451 	ctx->crl = crl;
452 	ctx->subject_req = req;
453 	ctx->flags = flags;
454 	}
455 
456 /* Old conf compatibility functions */
457 
X509V3_EXT_conf(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,char * name,char * value)458 X509_EXTENSION *X509V3_EXT_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
459 				char *name, char *value)
460 	{
461 	CONF ctmp;
462 	CONF_set_nconf(&ctmp, conf);
463 	return X509V3_EXT_nconf(&ctmp, ctx, name, value);
464 	}
465 
466 /* LHASH *conf:  Config file    */
467 /* char *value:  Value    */
X509V3_EXT_conf_nid(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,int ext_nid,char * value)468 X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
469 				    int ext_nid, char *value)
470 	{
471 	CONF ctmp;
472 	CONF_set_nconf(&ctmp, conf);
473 	return X509V3_EXT_nconf_nid(&ctmp, ctx, ext_nid, value);
474 	}
475 
conf_lhash_get_string(void * db,char * section,char * value)476 static char *conf_lhash_get_string(void *db, char *section, char *value)
477 	{
478 	return CONF_get_string(db, section, value);
479 	}
480 
STACK_OF(CONF_VALUE)481 static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, char *section)
482 	{
483 	return CONF_get_section(db, section);
484 	}
485 
486 static X509V3_CONF_METHOD conf_lhash_method = {
487 conf_lhash_get_string,
488 conf_lhash_get_section,
489 NULL,
490 NULL
491 };
492 
X509V3_set_conf_lhash(X509V3_CTX * ctx,LHASH_OF (CONF_VALUE)* lhash)493 void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH_OF(CONF_VALUE) *lhash)
494 	{
495 	ctx->db_meth = &conf_lhash_method;
496 	ctx->db = lhash;
497 	}
498 
X509V3_EXT_add_conf(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,char * section,X509 * cert)499 int X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
500 			char *section, X509 *cert)
501 	{
502 	CONF ctmp;
503 	CONF_set_nconf(&ctmp, conf);
504 	return X509V3_EXT_add_nconf(&ctmp, ctx, section, cert);
505 	}
506 
507 /* Same as above but for a CRL */
508 
X509V3_EXT_CRL_add_conf(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,char * section,X509_CRL * crl)509 int X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
510 			    char *section, X509_CRL *crl)
511 	{
512 	CONF ctmp;
513 	CONF_set_nconf(&ctmp, conf);
514 	return X509V3_EXT_CRL_add_nconf(&ctmp, ctx, section, crl);
515 	}
516 
517 /* Add extensions to certificate request */
518 
X509V3_EXT_REQ_add_conf(LHASH_OF (CONF_VALUE)* conf,X509V3_CTX * ctx,char * section,X509_REQ * req)519 int X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
520 			    char *section, X509_REQ *req)
521 	{
522 	CONF ctmp;
523 	CONF_set_nconf(&ctmp, conf);
524 	return X509V3_EXT_REQ_add_nconf(&ctmp, ctx, section, req);
525 	}
526