Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/x509v3/v3_lib.c	Lines:	56	123	45.5 %
Date:	2017-11-13	Branches:	32	86	37.2 %


/* $OpenBSD: v3_lib.c,v 1.17 2017/01/29 17:49:23 beck 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))) {
		X509V3error(ERR_R_MALLOC_FAILURE);
		return 0;
	}
	if (!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
		X509V3error(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);
}

static int ext_cmp_BSEARCH_CMP_FN(const void *, const void *);
static int ext_cmp(const X509V3_EXT_METHOD * const *, const X509V3_EXT_METHOD * const *);
static const X509V3_EXT_METHOD * *OBJ_bsearch_ext(const X509V3_EXT_METHOD * *key, const X509V3_EXT_METHOD * const *base, int num);

static int
ext_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_)
{
	const X509V3_EXT_METHOD * const *a = a_;
	const X509V3_EXT_METHOD * const *b = b_;
	return ext_cmp(a, b);
}

static const X509V3_EXT_METHOD * *
OBJ_bsearch_ext(const X509V3_EXT_METHOD * *key, const X509V3_EXT_METHOD * const *base, int num)
{
	return (const X509V3_EXT_METHOD * *)OBJ_bsearch_(key, base, num, sizeof(const X509V3_EXT_METHOD *),
	    ext_cmp_BSEARCH_CMP_FN);
}

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))) {
		X509V3error(X509V3_R_EXTENSION_NOT_FOUND);
		return 0;
	}
	if (!(tmpext = malloc(sizeof(X509V3_EXT_METHOD)))) {
		X509V3error(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,
		    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) {
		X509V3error(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))
		X509V3error(errcode);
	return 0;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: v3_lib.c,v 1.17 2017/01/29 17:49:23 beck 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			X509V3error(ERR_R_MALLOC_FAILURE);
79			return 0;
80			}
81			if (!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
82			X509V3error(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			{
91		17212	return ((a)->ext_nid - (b)->ext_nid);
92			}
93
94			static int ext_cmp_BSEARCH_CMP_FN(const void , const void );
95			static int ext_cmp(const X509V3_EXT_METHOD * const , const X509V3_EXT_METHOD const *);
96			static const X509V3_EXT_METHOD * OBJ_bsearch_ext(const X509V3_EXT_METHOD key, const X509V3_EXT_METHOD const *base, int num);
97
98			static int
99			ext_cmp_BSEARCH_CMP_FN(const void a_, const void b_)
100			{
101		17212	const X509V3_EXT_METHOD * const *a = a_;
102		8606	const X509V3_EXT_METHOD * const *b = b_;
103		8606	return ext_cmp(a, b);
104			}
105
106			static const X509V3_EXT_METHOD * *
107			OBJ_bsearch_ext(const X509V3_EXT_METHOD * key, const X509V3_EXT_METHOD const *base, int num)
108			{
109		3670	return (const X509V3_EXT_METHOD * )OBJ_bsearch_(key, base, num, sizeof(const X509V3_EXT_METHOD ),
110			ext_cmp_BSEARCH_CMP_FN);
111			}
112
113			const X509V3_EXT_METHOD *
114			X509V3_EXT_get_nid(int nid)
115			{
116		3670	X509V3_EXT_METHOD tmp;
117		1835	const X509V3_EXT_METHOD t = &tmp, const *ret;
118			int idx;
119
120	✗✓	1835	if (nid < 0)
121			return NULL;
122		1835	tmp.ext_nid = nid;
123		1835	ret = OBJ_bsearch_ext(&t, standard_exts, STANDARD_EXTENSION_COUNT);
124	✓✗	1835	if (ret)
125		1835	return *ret;
126			if (!ext_list)
127			return NULL;
128			idx = sk_X509V3_EXT_METHOD_find(ext_list, &tmp);
129			if (idx == -1)
130			return NULL;
131			return sk_X509V3_EXT_METHOD_value(ext_list, idx);
132		1835	}
133
134			const X509V3_EXT_METHOD *
135			X509V3_EXT_get(X509_EXTENSION *ext)
136			{
137			int nid;
138
139	✗✓	3540	if ((nid = OBJ_obj2nid(ext->object)) == NID_undef)
140			return NULL;
141		1770	return X509V3_EXT_get_nid(nid);
142		1770	}
143
144			int
145			X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
146			{
147			for (; extlist->ext_nid!=-1; extlist++)
148			if (!X509V3_EXT_add(extlist))
149			return 0;
150			return 1;
151			}
152
153			int
154			X509V3_EXT_add_alias(int nid_to, int nid_from)
155			{
156			const X509V3_EXT_METHOD *ext;
157			X509V3_EXT_METHOD *tmpext;
158
159			if (!(ext = X509V3_EXT_get_nid(nid_from))) {
160			X509V3error(X509V3_R_EXTENSION_NOT_FOUND);
161			return 0;
162			}
163			if (!(tmpext = malloc(sizeof(X509V3_EXT_METHOD)))) {
164			X509V3error(ERR_R_MALLOC_FAILURE);
165			return 0;
166			}
167			tmpext = ext;
168			tmpext->ext_nid = nid_to;
169			tmpext->ext_flags \|= X509V3_EXT_DYNAMIC;
170			return X509V3_EXT_add(tmpext);
171			}
172
173			void
174			X509V3_EXT_cleanup(void)
175			{
176			sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free);
177			ext_list = NULL;
178			}
179
180			static void
181			ext_list_free(X509V3_EXT_METHOD *ext)
182			{
183			if (ext->ext_flags & X509V3_EXT_DYNAMIC)
184			free(ext);
185			}
186
187			/* Legacy function: we don't need to add standard extensions
188			* any more because they are now kept in ext_dat.h.
189			*/
190
191			int
192			X509V3_add_standard_extensions(void)
193			{
194			return 1;
195			}
196
197			/* Return an extension internal structure */
198
199			void *
200			X509V3_EXT_d2i(X509_EXTENSION *ext)
201			{
202			const X509V3_EXT_METHOD *method;
203		3442	const unsigned char *p;
204
205	✗✓	1721	if (!(method = X509V3_EXT_get(ext)))
206			return NULL;
207		1721	p = ext->value->data;
208	✓✗	1721	if (method->it)
209		1721	return ASN1_item_d2i(NULL, &p, ext->value->length,
210			method->it);
211			return method->d2i(NULL, &p, ext->value->length);
212		1721	}
213
214			/* Get critical flag and decoded version of extension from a NID.
215			* The "idx" variable returns the last found extension and can
216			* be used to retrieve multiple extensions of the same NID.
217			* However multiple extensions with the same NID is usually
218			* due to a badly encoded certificate so if idx is NULL we
219			* choke if multiple extensions exist.
220			* The "crit" variable is set to the critical value.
221			* The return value is the decoded extension or NULL on
222			* error. The actual error can have several different causes,
223			* the value of *crit reflects the cause:
224			* >= 0, extension found but not decoded (reflects critical value).
225			* -1 extension not found.
226			* -2 extension occurs more than once.
227			*/
228
229			void *
230			X509V3_get_d2i(STACK_OF(X509_EXTENSION) x, int nid, int crit, int *idx)
231			{
232			int lastpos, i;
233			X509_EXTENSION ex, found_ex = NULL;
234
235	✓✓	57208	if (!x) {
236	✗✓	22449	if (idx)
237			*idx = -1;
238	✓✓	22449	if (crit)
239		2240	*crit = -1;
240		22449	return NULL;
241			}
242	✗✓	6155	if (idx)
243			lastpos = *idx + 1;
244			else
245			lastpos = 0;
246	✗✓	6155	if (lastpos < 0)
247			lastpos = 0;
248	✓✓	53408	for (i = lastpos; i < sk_X509_EXTENSION_num(x); i++) {
249		20549	ex = sk_X509_EXTENSION_value(x, i);
250	✓✓	20549	if (OBJ_obj2nid(ex->object) == nid) {
251	✗✓	1721	if (idx) {
252			*idx = i;
253			found_ex = ex;
254			break;
255	✗✓	1721	} else if (found_ex) {
256			/* Found more than one */
257			if (crit)
258			*crit = -2;
259			return NULL;
260			}
261			found_ex = ex;
262		1721	}
263			}
264	✓✓	6155	if (found_ex) {
265			/* Found it */
266	✗✓	1721	if (crit)
267			*crit = X509_EXTENSION_get_critical(found_ex);
268		1721	return X509V3_EXT_d2i(found_ex);
269			}
270
271			/* Extension not found */
272	✗✓	4434	if (idx)
273			*idx = -1;
274	✓✓	4434	if (crit)
275		608	*crit = -1;
276		4434	return NULL;
277		28604	}
278
279			/* This function is a general extension append, replace and delete utility.
280			* The precise operation is governed by the 'flags' value. The 'crit' and
281			* 'value' arguments (if relevant) are the extensions internal structure.
282			*/
283
284			int
285			X509V3_add1_i2d(STACK_OF(X509_EXTENSION) *x, int nid, void value,
286			int crit, unsigned long flags)
287			{
288			int extidx = -1;
289			int errcode;
290			X509_EXTENSION ext, extmp;
291		90	unsigned long ext_op = flags & X509V3_ADD_OP_MASK;
292
293			/* If appending we don't care if it exists, otherwise
294			* look for existing extension.
295			*/
296	✓✗	45	if (ext_op != X509V3_ADD_APPEND)
297		45	extidx = X509v3_get_ext_by_NID(*x, nid, -1);
298
299			/* See if extension exists */
300	✗✓	45	if (extidx >= 0) {
301			/* If keep existing, nothing to do */
302			if (ext_op == X509V3_ADD_KEEP_EXISTING)
303			return 1;
304			/* If default then its an error */
305			if (ext_op == X509V3_ADD_DEFAULT) {
306			errcode = X509V3_R_EXTENSION_EXISTS;
307			goto err;
308			}
309			/* If delete, just delete it */
310			if (ext_op == X509V3_ADD_DELETE) {
311			if (!sk_X509_EXTENSION_delete(*x, extidx))
312			return -1;
313			return 1;
314			}
315			} else {
316			/* If replace existing or delete, error since
317			* extension must exist
318			*/
319	✗✓	90	if ((ext_op == X509V3_ADD_REPLACE_EXISTING) \|\|
320		45	(ext_op == X509V3_ADD_DELETE)) {
321			errcode = X509V3_R_EXTENSION_NOT_FOUND;
322			goto err;
323			}
324			}
325
326			/* If we get this far then we have to create an extension:
327			* could have some flags for alternative encoding schemes...
328			*/
329
330		45	ext = X509V3_EXT_i2d(nid, crit, value);
331
332	✗✓	45	if (!ext) {
333			X509V3error(X509V3_R_ERROR_CREATING_EXTENSION);
334			return 0;
335			}
336
337			/* If extension exists replace it.. */
338	✗✓	45	if (extidx >= 0) {
339			extmp = sk_X509_EXTENSION_value(*x, extidx);
340			X509_EXTENSION_free(extmp);
341			if (!sk_X509_EXTENSION_set(*x, extidx, ext))
342			return -1;
343			return 1;
344			}
345
346	✓✗✗✓	90	if (!x && !(x = sk_X509_EXTENSION_new_null()))
347			return -1;
348	✗✓	45	if (!sk_X509_EXTENSION_push(*x, ext))
349			return -1;
350
351		45	return 1;
352
353			err:
354			if (!(flags & X509V3_ADD_SILENT))
355			X509V3error(errcode);
356			return 0;
357		45	}