Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/x509v3/v3_lib.c	Lines:	37	124	29.8 %
Date:	2016-12-06	Branches:	20	86	23.3 %


/* $OpenBSD: v3_lib.c,v 1.14 2015/02/10 11:22:22 jsing Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
/* X509 v3 extension utilities */

#include <stdio.h>

#include <openssl/conf.h>
#include <openssl/err.h>
#include <openssl/x509v3.h>

#include "ext_dat.h"

static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL;

static int ext_cmp(const X509V3_EXT_METHOD * const *a,
    const X509V3_EXT_METHOD * const *b);
static void ext_list_free(X509V3_EXT_METHOD *ext);

int
X509V3_EXT_add(X509V3_EXT_METHOD *ext)
{
	if (!ext_list && !(ext_list = sk_X509V3_EXT_METHOD_new(ext_cmp))) {
		X509V3err(X509V3_F_X509V3_EXT_ADD, ERR_R_MALLOC_FAILURE);
		return 0;
	}
	if (!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
		X509V3err(X509V3_F_X509V3_EXT_ADD, ERR_R_MALLOC_FAILURE);
		return 0;
	}
	return 1;
}

static int
ext_cmp(const X509V3_EXT_METHOD * const *a, const X509V3_EXT_METHOD * const *b)
{
	return ((*a)->ext_nid - (*b)->ext_nid);
}

DECLARE_OBJ_BSEARCH_CMP_FN(const X509V3_EXT_METHOD *,
    const X509V3_EXT_METHOD *, ext);
IMPLEMENT_OBJ_BSEARCH_CMP_FN(const X509V3_EXT_METHOD *,
    const X509V3_EXT_METHOD *, ext);

const X509V3_EXT_METHOD *
X509V3_EXT_get_nid(int nid)
{
	X509V3_EXT_METHOD tmp;
	const X509V3_EXT_METHOD *t = &tmp, * const *ret;
	int idx;

	if (nid < 0)
		return NULL;
	tmp.ext_nid = nid;
	ret = OBJ_bsearch_ext(&t, standard_exts, STANDARD_EXTENSION_COUNT);
	if (ret)
		return *ret;
	if (!ext_list)
		return NULL;
	idx = sk_X509V3_EXT_METHOD_find(ext_list, &tmp);
	if (idx == -1)
		return NULL;
	return sk_X509V3_EXT_METHOD_value(ext_list, idx);
}

const X509V3_EXT_METHOD *
X509V3_EXT_get(X509_EXTENSION *ext)
{
	int nid;

	if ((nid = OBJ_obj2nid(ext->object)) == NID_undef)
		return NULL;
	return X509V3_EXT_get_nid(nid);
}

int
X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
{
	for (; extlist->ext_nid!=-1; extlist++)
		if (!X509V3_EXT_add(extlist))
			return 0;
	return 1;
}

int
X509V3_EXT_add_alias(int nid_to, int nid_from)
{
	const X509V3_EXT_METHOD *ext;
	X509V3_EXT_METHOD *tmpext;

	if (!(ext = X509V3_EXT_get_nid(nid_from))) {
		X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,
		    X509V3_R_EXTENSION_NOT_FOUND);
		return 0;
	}
	if (!(tmpext = malloc(sizeof(X509V3_EXT_METHOD)))) {
		X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS, ERR_R_MALLOC_FAILURE);
		return 0;
	}
	*tmpext = *ext;
	tmpext->ext_nid = nid_to;
	tmpext->ext_flags |= X509V3_EXT_DYNAMIC;
	return X509V3_EXT_add(tmpext);
}

void
X509V3_EXT_cleanup(void)
{
	sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free);
	ext_list = NULL;
}

static void
ext_list_free(X509V3_EXT_METHOD *ext)
{
	if (ext->ext_flags & X509V3_EXT_DYNAMIC)
		free(ext);
}

/* Legacy function: we don't need to add standard extensions
 * any more because they are now kept in ext_dat.h.
 */

int
X509V3_add_standard_extensions(void)
{
	return 1;
}

/* Return an extension internal structure */

void *
X509V3_EXT_d2i(X509_EXTENSION *ext)
{
	const X509V3_EXT_METHOD *method;
	const unsigned char *p;

	if (!(method = X509V3_EXT_get(ext)))
		return NULL;
	p = ext->value->data;
	if (method->it)
		return ASN1_item_d2i(NULL, &p, ext->value->length,
		    ASN1_ITEM_ptr(method->it));
	return method->d2i(NULL, &p, ext->value->length);
}

/* Get critical flag and decoded version of extension from a NID.
 * The "idx" variable returns the last found extension and can
 * be used to retrieve multiple extensions of the same NID.
 * However multiple extensions with the same NID is usually
 * due to a badly encoded certificate so if idx is NULL we
 * choke if multiple extensions exist.
 * The "crit" variable is set to the critical value.
 * The return value is the decoded extension or NULL on
 * error. The actual error can have several different causes,
 * the value of *crit reflects the cause:
 * >= 0, extension found but not decoded (reflects critical value).
 * -1 extension not found.
 * -2 extension occurs more than once.
 */

void *
X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx)
{
	int lastpos, i;
	X509_EXTENSION *ex, *found_ex = NULL;

	if (!x) {
		if (idx)
			*idx = -1;
		if (crit)
			*crit = -1;
		return NULL;
	}
	if (idx)
		lastpos = *idx + 1;
	else
		lastpos = 0;
	if (lastpos < 0)
		lastpos = 0;
	for (i = lastpos; i < sk_X509_EXTENSION_num(x); i++) {
		ex = sk_X509_EXTENSION_value(x, i);
		if (OBJ_obj2nid(ex->object) == nid) {
			if (idx) {
				*idx = i;
				found_ex = ex;
				break;
			} else if (found_ex) {
				/* Found more than one */
				if (crit)
					*crit = -2;
				return NULL;
			}
			found_ex = ex;
		}
	}
	if (found_ex) {
		/* Found it */
		if (crit)
			*crit = X509_EXTENSION_get_critical(found_ex);
		return X509V3_EXT_d2i(found_ex);
	}

	/* Extension not found */
	if (idx)
		*idx = -1;
	if (crit)
		*crit = -1;
	return NULL;
}

/* This function is a general extension append, replace and delete utility.
 * The precise operation is governed by the 'flags' value. The 'crit' and
 * 'value' arguments (if relevant) are the extensions internal structure.
 */

int
X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value,
    int crit, unsigned long flags)
{
	int extidx = -1;
	int errcode;
	X509_EXTENSION *ext, *extmp;
	unsigned long ext_op = flags & X509V3_ADD_OP_MASK;

	/* If appending we don't care if it exists, otherwise
	 * look for existing extension.
	 */
	if (ext_op != X509V3_ADD_APPEND)
		extidx = X509v3_get_ext_by_NID(*x, nid, -1);

	/* See if extension exists */
	if (extidx >= 0) {
		/* If keep existing, nothing to do */
		if (ext_op == X509V3_ADD_KEEP_EXISTING)
			return 1;
		/* If default then its an error */
		if (ext_op == X509V3_ADD_DEFAULT) {
			errcode = X509V3_R_EXTENSION_EXISTS;
			goto err;
		}
		/* If delete, just delete it */
		if (ext_op == X509V3_ADD_DELETE) {
			if (!sk_X509_EXTENSION_delete(*x, extidx))
				return -1;
			return 1;
		}
	} else {
		/* If replace existing or delete, error since
		 * extension must exist
		 */
		if ((ext_op == X509V3_ADD_REPLACE_EXISTING) ||
		    (ext_op == X509V3_ADD_DELETE)) {
			errcode = X509V3_R_EXTENSION_NOT_FOUND;
			goto err;
		}
	}

	/* If we get this far then we have to create an extension:
	 * could have some flags for alternative encoding schemes...
	 */

	ext = X509V3_EXT_i2d(nid, crit, value);

	if (!ext) {
		X509V3err(X509V3_F_X509V3_ADD1_I2D,
		    X509V3_R_ERROR_CREATING_EXTENSION);
		return 0;
	}

	/* If extension exists replace it.. */
	if (extidx >= 0) {
		extmp = sk_X509_EXTENSION_value(*x, extidx);
		X509_EXTENSION_free(extmp);
		if (!sk_X509_EXTENSION_set(*x, extidx, ext))
			return -1;
		return 1;
	}

	if (!*x && !(*x = sk_X509_EXTENSION_new_null()))
		return -1;
	if (!sk_X509_EXTENSION_push(*x, ext))
		return -1;

	return 1;

err:
	if (!(flags & X509V3_ADD_SILENT))
		X509V3err(X509V3_F_X509V3_ADD1_I2D, errcode);
	return 0;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: v3_lib.c,v 1.14 2015/02/10 11:22:22 jsing Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 1999.
4			*/
5			/* ====================================================================
6			* Copyright (c) 1999 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			/* X509 v3 extension utilities */
59
60			#include <stdio.h>
61
62			#include <openssl/conf.h>
63			#include <openssl/err.h>
64			#include <openssl/x509v3.h>
65
66			#include "ext_dat.h"
67
68			static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL;
69
70			static int ext_cmp(const X509V3_EXT_METHOD * const *a,
71			const X509V3_EXT_METHOD * const *b);
72			static void ext_list_free(X509V3_EXT_METHOD *ext);
73
74			int
75			X509V3_EXT_add(X509V3_EXT_METHOD *ext)
76			{
77			if (!ext_list && !(ext_list = sk_X509V3_EXT_METHOD_new(ext_cmp))) {
78			X509V3err(X509V3_F_X509V3_EXT_ADD, ERR_R_MALLOC_FAILURE);
79			return 0;
80			}
81			if (!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
82			X509V3err(X509V3_F_X509V3_EXT_ADD, ERR_R_MALLOC_FAILURE);
83			return 0;
84			}
85			return 1;
86			}
87
88			static int
89			ext_cmp(const X509V3_EXT_METHOD * const a, const X509V3_EXT_METHOD const *b)
90		188	{
91		188	return ((a)->ext_nid - (b)->ext_nid);
92			}
93
94			DECLARE_OBJ_BSEARCH_CMP_FN(const X509V3_EXT_METHOD *,
95			const X509V3_EXT_METHOD *, ext);
96		227	IMPLEMENT_OBJ_BSEARCH_CMP_FN(const X509V3_EXT_METHOD *,
97			const X509V3_EXT_METHOD *, ext);
98
99			const X509V3_EXT_METHOD *
100			X509V3_EXT_get_nid(int nid)
101		39	{
102			X509V3_EXT_METHOD tmp;
103		39	const X509V3_EXT_METHOD t = &tmp, const *ret;
104			int idx;
105
106	✗✓	39	if (nid < 0)
107			return NULL;
108		39	tmp.ext_nid = nid;
109		39	ret = OBJ_bsearch_ext(&t, standard_exts, STANDARD_EXTENSION_COUNT);
110	✓✗	39	if (ret)
111		39	return *ret;
112			if (!ext_list)
113			return NULL;
114			idx = sk_X509V3_EXT_METHOD_find(ext_list, &tmp);
115			if (idx == -1)
116			return NULL;
117			return sk_X509V3_EXT_METHOD_value(ext_list, idx);
118			}
119
120			const X509V3_EXT_METHOD *
121			X509V3_EXT_get(X509_EXTENSION *ext)
122		39	{
123			int nid;
124
125	✗✓	39	if ((nid = OBJ_obj2nid(ext->object)) == NID_undef)
126			return NULL;
127		39	return X509V3_EXT_get_nid(nid);
128			}
129
130			int
131			X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
132			{
133			for (; extlist->ext_nid!=-1; extlist++)
134			if (!X509V3_EXT_add(extlist))
135			return 0;
136			return 1;
137			}
138
139			int
140			X509V3_EXT_add_alias(int nid_to, int nid_from)
141			{
142			const X509V3_EXT_METHOD *ext;
143			X509V3_EXT_METHOD *tmpext;
144
145			if (!(ext = X509V3_EXT_get_nid(nid_from))) {
146			X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,
147			X509V3_R_EXTENSION_NOT_FOUND);
148			return 0;
149			}
150			if (!(tmpext = malloc(sizeof(X509V3_EXT_METHOD)))) {
151			X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS, ERR_R_MALLOC_FAILURE);
152			return 0;
153			}
154			tmpext = ext;
155			tmpext->ext_nid = nid_to;
156			tmpext->ext_flags \|= X509V3_EXT_DYNAMIC;
157			return X509V3_EXT_add(tmpext);
158			}
159
160			void
161			X509V3_EXT_cleanup(void)
162			{
163			sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free);
164			ext_list = NULL;
165			}
166
167			static void
168			ext_list_free(X509V3_EXT_METHOD *ext)
169			{
170			if (ext->ext_flags & X509V3_EXT_DYNAMIC)
171			free(ext);
172			}
173
174			/* Legacy function: we don't need to add standard extensions
175			* any more because they are now kept in ext_dat.h.
176			*/
177
178			int
179			X509V3_add_standard_extensions(void)
180			{
181			return 1;
182			}
183
184			/* Return an extension internal structure */
185
186			void *
187			X509V3_EXT_d2i(X509_EXTENSION *ext)
188		39	{
189			const X509V3_EXT_METHOD *method;
190			const unsigned char *p;
191
192	✗✓	39	if (!(method = X509V3_EXT_get(ext)))
193			return NULL;
194		39	p = ext->value->data;
195	✓✗	39	if (method->it)
196		39	return ASN1_item_d2i(NULL, &p, ext->value->length,
197			ASN1_ITEM_ptr(method->it));
198			return method->d2i(NULL, &p, ext->value->length);
199			}
200
201			/* Get critical flag and decoded version of extension from a NID.
202			* The "idx" variable returns the last found extension and can
203			* be used to retrieve multiple extensions of the same NID.
204			* However multiple extensions with the same NID is usually
205			* due to a badly encoded certificate so if idx is NULL we
206			* choke if multiple extensions exist.
207			* The "crit" variable is set to the critical value.
208			* The return value is the decoded extension or NULL on
209			* error. The actual error can have several different causes,
210			* the value of *crit reflects the cause:
211			* >= 0, extension found but not decoded (reflects critical value).
212			* -1 extension not found.
213			* -2 extension occurs more than once.
214			*/
215
216			void *
217			X509V3_get_d2i(STACK_OF(X509_EXTENSION) x, int nid, int crit, int *idx)
218		80	{
219			int lastpos, i;
220		80	X509_EXTENSION ex, found_ex = NULL;
221
222	✗✓	80	if (!x) {
223			if (idx)
224			*idx = -1;
225			if (crit)
226			*crit = -1;
227			return NULL;
228			}
229	✗✓	80	if (idx)
230			lastpos = *idx + 1;
231			else
232		80	lastpos = 0;
233	✗✓	80	if (lastpos < 0)
234			lastpos = 0;
235	✓✓	610	for (i = lastpos; i < sk_X509_EXTENSION_num(x); i++) {
236		530	ex = sk_X509_EXTENSION_value(x, i);
237	✓✓	530	if (OBJ_obj2nid(ex->object) == nid) {
238	✗✓	39	if (idx) {
239			*idx = i;
240			found_ex = ex;
241			break;
242	✗✓	39	} else if (found_ex) {
243			/* Found more than one */
244			if (crit)
245			*crit = -2;
246			return NULL;
247			}
248		39	found_ex = ex;
249			}
250			}
251	✓✓	80	if (found_ex) {
252			/* Found it */
253	✗✓	39	if (crit)
254			*crit = X509_EXTENSION_get_critical(found_ex);
255		39	return X509V3_EXT_d2i(found_ex);
256			}
257
258			/* Extension not found */
259	✗✓	41	if (idx)
260			*idx = -1;
261	✓✓	41	if (crit)
262		8	*crit = -1;
263		41	return NULL;
264			}
265
266			/* This function is a general extension append, replace and delete utility.
267			* The precise operation is governed by the 'flags' value. The 'crit' and
268			* 'value' arguments (if relevant) are the extensions internal structure.
269			*/
270
271			int
272			X509V3_add1_i2d(STACK_OF(X509_EXTENSION) *x, int nid, void value,
273			int crit, unsigned long flags)
274			{
275			int extidx = -1;
276			int errcode;
277			X509_EXTENSION ext, extmp;
278			unsigned long ext_op = flags & X509V3_ADD_OP_MASK;
279
280			/* If appending we don't care if it exists, otherwise
281			* look for existing extension.
282			*/
283			if (ext_op != X509V3_ADD_APPEND)
284			extidx = X509v3_get_ext_by_NID(*x, nid, -1);
285
286			/* See if extension exists */
287			if (extidx >= 0) {
288			/* If keep existing, nothing to do */
289			if (ext_op == X509V3_ADD_KEEP_EXISTING)
290			return 1;
291			/* If default then its an error */
292			if (ext_op == X509V3_ADD_DEFAULT) {
293			errcode = X509V3_R_EXTENSION_EXISTS;
294			goto err;
295			}
296			/* If delete, just delete it */
297			if (ext_op == X509V3_ADD_DELETE) {
298			if (!sk_X509_EXTENSION_delete(*x, extidx))
299			return -1;
300			return 1;
301			}
302			} else {
303			/* If replace existing or delete, error since
304			* extension must exist
305			*/
306			if ((ext_op == X509V3_ADD_REPLACE_EXISTING) \|\|
307			(ext_op == X509V3_ADD_DELETE)) {
308			errcode = X509V3_R_EXTENSION_NOT_FOUND;
309			goto err;
310			}
311			}
312
313			/* If we get this far then we have to create an extension:
314			* could have some flags for alternative encoding schemes...
315			*/
316
317			ext = X509V3_EXT_i2d(nid, crit, value);
318
319			if (!ext) {
320			X509V3err(X509V3_F_X509V3_ADD1_I2D,
321			X509V3_R_ERROR_CREATING_EXTENSION);
322			return 0;
323			}
324
325			/* If extension exists replace it.. */
326			if (extidx >= 0) {
327			extmp = sk_X509_EXTENSION_value(*x, extidx);
328			X509_EXTENSION_free(extmp);
329			if (!sk_X509_EXTENSION_set(*x, extidx, ext))
330			return -1;
331			return 1;
332			}
333
334			if (!x && !(x = sk_X509_EXTENSION_new_null()))
335			return -1;
336			if (!sk_X509_EXTENSION_push(*x, ext))
337			return -1;
338
339			return 1;
340
341			err:
342			if (!(flags & X509V3_ADD_SILENT))
343			X509V3err(X509V3_F_X509V3_ADD1_I2D, errcode);
344			return 0;
345			}