/src/openssl/crypto/x509/x509_v3.c

Source
/*
 * Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/safestack.h>
#include <openssl/asn1.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include "x509_local.h"

int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
{
    int ret;

    if (x == NULL)
        return 0;
    ret = sk_X509_EXTENSION_num(x);
    return ret > 0 ? ret : 0;
}

int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid,
                          int lastpos)
{
    ASN1_OBJECT *obj;

    obj = OBJ_nid2obj(nid);
    if (obj == NULL)
        return -2;
    return X509v3_get_ext_by_OBJ(x, obj, lastpos);
}

int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk,
                          const ASN1_OBJECT *obj, int lastpos)
{
    int n;
    X509_EXTENSION *ex;

    if (sk == NULL)
        return -1;
    lastpos++;
    if (lastpos < 0)
        lastpos = 0;
    n = sk_X509_EXTENSION_num(sk);
    for (; lastpos < n; lastpos++) {
        ex = sk_X509_EXTENSION_value(sk, lastpos);
        if (OBJ_cmp(ex->object, obj) == 0)
            return lastpos;
    }
    return -1;
}

int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
                               int lastpos)
{
    int n, c;
    X509_EXTENSION *ex;

    if (sk == NULL)
        return -1;
    lastpos++;
    if (lastpos < 0)
        lastpos = 0;
    n = sk_X509_EXTENSION_num(sk);
    for (; lastpos < n; lastpos++) {
        ex = sk_X509_EXTENSION_value(sk, lastpos);
        c = X509_EXTENSION_get_critical(ex);
        crit = crit != 0;
        if (c == crit)
            return lastpos;
    }
    return -1;
}

X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc)
{
    if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
        return NULL;
    else
        return sk_X509_EXTENSION_value(x, loc);
}

X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc)
{
    X509_EXTENSION *ret;

    if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
        return NULL;
    ret = sk_X509_EXTENSION_delete(x, loc);
    return ret;
}

STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
                                         X509_EXTENSION *ex, int loc)
{
    X509_EXTENSION *new_ex = NULL;
    int n;
    STACK_OF(X509_EXTENSION) *sk = NULL;

    if (x == NULL) {
        ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
        goto err;
    }

    if (*x == NULL) {
        if ((sk = sk_X509_EXTENSION_new_null()) == NULL) {
            ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
            goto err;
        }
    } else
        sk = *x;

    n = sk_X509_EXTENSION_num(sk);
    if (loc > n)
        loc = n;
    else if (loc < 0)
        loc = n;

    if ((new_ex = X509_EXTENSION_dup(ex)) == NULL) {
        ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
        goto err;
    }
    if (!sk_X509_EXTENSION_insert(sk, new_ex, loc)) {
        ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
        goto err;
    }
    if (*x == NULL)
        *x = sk;
    return sk;
 err:
    X509_EXTENSION_free(new_ex);
    if (x != NULL && *x == NULL)
        sk_X509_EXTENSION_free(sk);
    return NULL;
}

/* This returns NULL also in non-error case *target == NULL && sk_X509_EXTENSION_num(exts) <= 0 */
STACK_OF(X509_EXTENSION) *X509v3_add_extensions(STACK_OF(X509_EXTENSION) **target,
                                                const STACK_OF(X509_EXTENSION) *exts)
{
    int i;

    if (target == NULL) {
        ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
        return NULL;
    }

    for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
        X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
        ASN1_OBJECT *obj = X509_EXTENSION_get_object(ext);
        int idx = X509v3_get_ext_by_OBJ(*target, obj, -1);

        /* Does extension exist in target? */
        if (idx != -1) {
            /* Delete all extensions of same type */
            do {
                X509_EXTENSION_free(sk_X509_EXTENSION_delete(*target, idx));
                idx = X509v3_get_ext_by_OBJ(*target, obj, -1);
            } while (idx != -1);
        }
        if (!X509v3_add_ext(target, ext, -1))
            return NULL;
    }
    return *target;
}

X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
                                             int crit,
                                             ASN1_OCTET_STRING *data)
{
    ASN1_OBJECT *obj;
    X509_EXTENSION *ret;

    obj = OBJ_nid2obj(nid);
    if (obj == NULL) {
        ERR_raise(ERR_LIB_X509, X509_R_UNKNOWN_NID);
        return NULL;
    }
    ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data);
    if (ret == NULL)
        ASN1_OBJECT_free(obj);
    return ret;
}

X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
                                             const ASN1_OBJECT *obj, int crit,
                                             ASN1_OCTET_STRING *data)
{
    X509_EXTENSION *ret;

    if ((ex == NULL) || (*ex == NULL)) {
        if ((ret = X509_EXTENSION_new()) == NULL) {
            ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
            return NULL;
        }
    } else
        ret = *ex;

    if (!X509_EXTENSION_set_object(ret, obj))
        goto err;
    if (!X509_EXTENSION_set_critical(ret, crit))
        goto err;
    if (!X509_EXTENSION_set_data(ret, data))
        goto err;

    if ((ex != NULL) && (*ex == NULL))
        *ex = ret;
    return ret;
 err:
    if ((ex == NULL) || (ret != *ex))
        X509_EXTENSION_free(ret);
    return NULL;
}

int X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj)
{
    if ((ex == NULL) || (obj == NULL))
        return 0;
    ASN1_OBJECT_free(ex->object);
    ex->object = OBJ_dup(obj);
    return ex->object != NULL;
}

int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
{
    if (ex == NULL)
        return 0;
    ex->critical = (crit) ? 0xFF : 0;
    return 1;
}

int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data)
{
    int i;

    if (ex == NULL)
        return 0;
    i = ASN1_OCTET_STRING_set(&ex->value, data->data, data->length);
    if (!i)
        return 0;
    return 1;
}

ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
{
    if (ex == NULL)
        return NULL;
    return ex->object;
}

ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
{
    if (ex == NULL)
        return NULL;
    return &ex->value;
}

int X509_EXTENSION_get_critical(const X509_EXTENSION *ex)
{
    if (ex == NULL)
        return 0;
    if (ex->critical > 0)
        return 1;
    return 0;
}

Coverage Report

Created: 2025-10-28 06:56

Line	Count	Source
1		/*
2		* Copyright 1995-2024 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		#include <stdio.h>
11		#include "internal/cryptlib.h"
12		#include <openssl/safestack.h>
13		#include <openssl/asn1.h>
14		#include <openssl/objects.h>
15		#include <openssl/evp.h>
16		#include <openssl/x509.h>
17		#include <openssl/x509v3.h>
18		#include "x509_local.h"
19
20		int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
21	0	{
22	0	int ret;
23
24	0	if (x == NULL)
25	0	return 0;
26	0	ret = sk_X509_EXTENSION_num(x);
27	0	return ret > 0 ? ret : 0;
28	0	}
29
30		int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid,
31		int lastpos)
32	0	{
33	0	ASN1_OBJECT *obj;
34
35	0	obj = OBJ_nid2obj(nid);
36	0	if (obj == NULL)
37	0	return -2;
38	0	return X509v3_get_ext_by_OBJ(x, obj, lastpos);
39	0	}
40
41		int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk,
42		const ASN1_OBJECT *obj, int lastpos)
43	0	{
44	0	int n;
45	0	X509_EXTENSION *ex;
46
47	0	if (sk == NULL)
48	0	return -1;
49	0	lastpos++;
50	0	if (lastpos < 0)
51	0	lastpos = 0;
52	0	n = sk_X509_EXTENSION_num(sk);
53	0	for (; lastpos < n; lastpos++) {
54	0	ex = sk_X509_EXTENSION_value(sk, lastpos);
55	0	if (OBJ_cmp(ex->object, obj) == 0)
56	0	return lastpos;
57	0	}
58	0	return -1;
59	0	}
60
61		int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
62		int lastpos)
63	0	{
64	0	int n, c;
65	0	X509_EXTENSION *ex;
66
67	0	if (sk == NULL)
68	0	return -1;
69	0	lastpos++;
70	0	if (lastpos < 0)
71	0	lastpos = 0;
72	0	n = sk_X509_EXTENSION_num(sk);
73	0	for (; lastpos < n; lastpos++) {
74	0	ex = sk_X509_EXTENSION_value(sk, lastpos);
75	0	c = X509_EXTENSION_get_critical(ex);
76	0	crit = crit != 0;
77	0	if (c == crit)
78	0	return lastpos;
79	0	}
80	0	return -1;
81	0	}
82
83		X509_EXTENSION X509v3_get_ext(const STACK_OF(X509_EXTENSION) x, int loc)
84	0	{
85	0	if (x == NULL \|\| sk_X509_EXTENSION_num(x) <= loc \|\| loc < 0)
86	0	return NULL;
87	0	else
88	0	return sk_X509_EXTENSION_value(x, loc);
89	0	}
90
91		X509_EXTENSION X509v3_delete_ext(STACK_OF(X509_EXTENSION) x, int loc)
92	0	{
93	0	X509_EXTENSION *ret;
94
95	0	if (x == NULL \|\| sk_X509_EXTENSION_num(x) <= loc \|\| loc < 0)
96	0	return NULL;
97	0	ret = sk_X509_EXTENSION_delete(x, loc);
98	0	return ret;
99	0	}
100
101		STACK_OF(X509_EXTENSION) X509v3_add_ext(STACK_OF(X509_EXTENSION) *x,
102		X509_EXTENSION *ex, int loc)
103	0	{
104	0	X509_EXTENSION *new_ex = NULL;
105	0	int n;
106	0	STACK_OF(X509_EXTENSION) *sk = NULL;
107
108	0	if (x == NULL) {
109	0	ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
110	0	goto err;
111	0	}
112
113	0	if (*x == NULL) {
114	0	if ((sk = sk_X509_EXTENSION_new_null()) == NULL) {
115	0	ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
116	0	goto err;
117	0	}
118	0	} else
119	0	sk = *x;
120
121	0	n = sk_X509_EXTENSION_num(sk);
122	0	if (loc > n)
123	0	loc = n;
124	0	else if (loc < 0)
125	0	loc = n;
126
127	0	if ((new_ex = X509_EXTENSION_dup(ex)) == NULL) {
128	0	ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
129	0	goto err;
130	0	}
131	0	if (!sk_X509_EXTENSION_insert(sk, new_ex, loc)) {
132	0	ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
133	0	goto err;
134	0	}
135	0	if (*x == NULL)
136	0	*x = sk;
137	0	return sk;
138	0	err:
139	0	X509_EXTENSION_free(new_ex);
140	0	if (x != NULL && *x == NULL)
141	0	sk_X509_EXTENSION_free(sk);
142	0	return NULL;
143	0	}
144
145		/* This returns NULL also in non-error case target == NULL && sk_X509_EXTENSION_num(exts) <= 0 /
146		STACK_OF(X509_EXTENSION) X509v3_add_extensions(STACK_OF(X509_EXTENSION) *target,
147		const STACK_OF(X509_EXTENSION) *exts)
148	0	{
149	0	int i;
150
151	0	if (target == NULL) {
152	0	ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
153	0	return NULL;
154	0	}
155
156	0	for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
157	0	X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
158	0	ASN1_OBJECT *obj = X509_EXTENSION_get_object(ext);
159	0	int idx = X509v3_get_ext_by_OBJ(*target, obj, -1);
160
161		/* Does extension exist in target? */
162	0	if (idx != -1) {
163		/* Delete all extensions of same type */
164	0	do {
165	0	X509_EXTENSION_free(sk_X509_EXTENSION_delete(*target, idx));
166	0	idx = X509v3_get_ext_by_OBJ(*target, obj, -1);
167	0	} while (idx != -1);
168	0	}
169	0	if (!X509v3_add_ext(target, ext, -1))
170	0	return NULL;
171	0	}
172	0	return *target;
173	0	}
174
175		X509_EXTENSION X509_EXTENSION_create_by_NID(X509_EXTENSION *ex, int nid,
176		int crit,
177		ASN1_OCTET_STRING *data)
178	0	{
179	0	ASN1_OBJECT *obj;
180	0	X509_EXTENSION *ret;
181
182	0	obj = OBJ_nid2obj(nid);
183	0	if (obj == NULL) {
184	0	ERR_raise(ERR_LIB_X509, X509_R_UNKNOWN_NID);
185	0	return NULL;
186	0	}
187	0	ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data);
188	0	if (ret == NULL)
189	0	ASN1_OBJECT_free(obj);
190	0	return ret;
191	0	}
192
193		X509_EXTENSION X509_EXTENSION_create_by_OBJ(X509_EXTENSION *ex,
194		const ASN1_OBJECT *obj, int crit,
195		ASN1_OCTET_STRING *data)
196	0	{
197	0	X509_EXTENSION *ret;
198
199	0	if ((ex == NULL) \|\| (*ex == NULL)) {
200	0	if ((ret = X509_EXTENSION_new()) == NULL) {
201	0	ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
202	0	return NULL;
203	0	}
204	0	} else
205	0	ret = *ex;
206
207	0	if (!X509_EXTENSION_set_object(ret, obj))
208	0	goto err;
209	0	if (!X509_EXTENSION_set_critical(ret, crit))
210	0	goto err;
211	0	if (!X509_EXTENSION_set_data(ret, data))
212	0	goto err;
213
214	0	if ((ex != NULL) && (*ex == NULL))
215	0	*ex = ret;
216	0	return ret;
217	0	err:
218	0	if ((ex == NULL) \|\| (ret != *ex))
219	0	X509_EXTENSION_free(ret);
220	0	return NULL;
221	0	}
222
223		int X509_EXTENSION_set_object(X509_EXTENSION ex, const ASN1_OBJECT obj)
224	0	{
225	0	if ((ex == NULL) \|\| (obj == NULL))
226	0	return 0;
227	0	ASN1_OBJECT_free(ex->object);
228	0	ex->object = OBJ_dup(obj);
229	0	return ex->object != NULL;
230	0	}
231
232		int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
233	0	{
234	0	if (ex == NULL)
235	0	return 0;
236	0	ex->critical = (crit) ? 0xFF : 0;
237	0	return 1;
238	0	}
239
240		int X509_EXTENSION_set_data(X509_EXTENSION ex, ASN1_OCTET_STRING data)
241	0	{
242	0	int i;
243
244	0	if (ex == NULL)
245	0	return 0;
246	0	i = ASN1_OCTET_STRING_set(&ex->value, data->data, data->length);
247	0	if (!i)
248	0	return 0;
249	0	return 1;
250	0	}
251
252		ASN1_OBJECT X509_EXTENSION_get_object(X509_EXTENSION ex)
253	0	{
254	0	if (ex == NULL)
255	0	return NULL;
256	0	return ex->object;
257	0	}
258
259		ASN1_OCTET_STRING X509_EXTENSION_get_data(X509_EXTENSION ex)
260	0	{
261	0	if (ex == NULL)
262	0	return NULL;
263	0	return &ex->value;
264	0	}
265
266		int X509_EXTENSION_get_critical(const X509_EXTENSION *ex)
267	0	{
268	0	if (ex == NULL)
269	0	return 0;
270	0	if (ex->critical > 0)
271	0	return 1;
272	0	return 0;
273	0	}