1/* v3_bcons.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 * 1999.
5 */
6/* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in
18 *    the documentation and/or other materials provided with the
19 *    distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 *    software must display the following acknowledgment:
23 *    "This product includes software developed by the OpenSSL Project
24 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 *    endorse or promote products derived from this software without
28 *    prior written permission. For written permission, please contact
29 *    licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 *    nor may "OpenSSL" appear in their names without prior written
33 *    permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 *    acknowledgment:
37 *    "This product includes software developed by the OpenSSL Project
38 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com).  This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com). */
57
58#include <stdio.h>
59#include <string.h>
60
61#include <openssl/asn1.h>
62#include <openssl/asn1t.h>
63#include <openssl/conf.h>
64#include <openssl/err.h>
65#include <openssl/obj.h>
66#include <openssl/x509v3.h>
67
68static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
69                                                   BASIC_CONSTRAINTS *bcons,
70                                                   STACK_OF(CONF_VALUE)
71                                                   *extlist);
72static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
73                                                X509V3_CTX *ctx,
74                                                STACK_OF(CONF_VALUE) *values);
75
76const X509V3_EXT_METHOD v3_bcons = {
77    NID_basic_constraints, 0,
78    ASN1_ITEM_ref(BASIC_CONSTRAINTS),
79    0, 0, 0, 0,
80    0, 0,
81    (X509V3_EXT_I2V) i2v_BASIC_CONSTRAINTS,
82    (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS,
83    NULL, NULL,
84    NULL
85};
86
87ASN1_SEQUENCE(BASIC_CONSTRAINTS) = {
88        ASN1_OPT(BASIC_CONSTRAINTS, ca, ASN1_FBOOLEAN),
89        ASN1_OPT(BASIC_CONSTRAINTS, pathlen, ASN1_INTEGER)
90} ASN1_SEQUENCE_END(BASIC_CONSTRAINTS)
91
92IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
93
94static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
95                                                   BASIC_CONSTRAINTS *bcons,
96                                                   STACK_OF(CONF_VALUE)
97                                                   *extlist)
98{
99    X509V3_add_value_bool("CA", bcons->ca, &extlist);
100    X509V3_add_value_int("pathlen", bcons->pathlen, &extlist);
101    return extlist;
102}
103
104static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
105                                                X509V3_CTX *ctx,
106                                                STACK_OF(CONF_VALUE) *values)
107{
108    BASIC_CONSTRAINTS *bcons = NULL;
109    CONF_VALUE *val;
110    size_t i;
111    if (!(bcons = BASIC_CONSTRAINTS_new())) {
112        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
113        return NULL;
114    }
115    for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
116        val = sk_CONF_VALUE_value(values, i);
117        if (!strcmp(val->name, "CA")) {
118            if (!X509V3_get_value_bool(val, &bcons->ca))
119                goto err;
120        } else if (!strcmp(val->name, "pathlen")) {
121            if (!X509V3_get_value_int(val, &bcons->pathlen))
122                goto err;
123        } else {
124            OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
125            X509V3_conf_err(val);
126            goto err;
127        }
128    }
129    return bcons;
130 err:
131    BASIC_CONSTRAINTS_free(bcons);
132    return NULL;
133}
134