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/* $OpenBSD: v3_bcons.c,v 1.17 2019/05/08 21:53:10 bcook 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).
*
*/
#include <stdio.h>
#include <string.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/conf.h>
#include <openssl/err.h>
#include <openssl/x509v3.h>
static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
BASIC_CONSTRAINTS *bcons, STACK_OF(CONF_VALUE) *extlist);
static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
const X509V3_EXT_METHOD v3_bcons = {
.ext_nid = NID_basic_constraints,
.ext_flags = 0,
.it = &BASIC_CONSTRAINTS_it,
.ext_new = NULL,
.ext_free = NULL,
.d2i = NULL,
.i2d = NULL,
.i2s = NULL,
.s2i = NULL,
.i2v = (X509V3_EXT_I2V)i2v_BASIC_CONSTRAINTS,
.v2i = (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS,
.i2r = NULL,
.r2i = NULL,
.usr_data = NULL,
};
static const ASN1_TEMPLATE BASIC_CONSTRAINTS_seq_tt[] = {
{
.flags = ASN1_TFLG_OPTIONAL,
.tag = 0,
.offset = offsetof(BASIC_CONSTRAINTS, ca),
.field_name = "ca",
.item = &ASN1_FBOOLEAN_it,
},
{
.flags = ASN1_TFLG_OPTIONAL,
.tag = 0,
.offset = offsetof(BASIC_CONSTRAINTS, pathlen),
.field_name = "pathlen",
.item = &ASN1_INTEGER_it,
},
};
const ASN1_ITEM BASIC_CONSTRAINTS_it = {
.itype = ASN1_ITYPE_SEQUENCE,
.utype = V_ASN1_SEQUENCE,
.templates = BASIC_CONSTRAINTS_seq_tt,
.tcount = sizeof(BASIC_CONSTRAINTS_seq_tt) / sizeof(ASN1_TEMPLATE),
.funcs = NULL,
.size = sizeof(BASIC_CONSTRAINTS),
.sname = "BASIC_CONSTRAINTS",
};
BASIC_CONSTRAINTS *
d2i_BASIC_CONSTRAINTS(BASIC_CONSTRAINTS **a, const unsigned char **in, long len)
{
return (BASIC_CONSTRAINTS *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
&BASIC_CONSTRAINTS_it);
}
int
i2d_BASIC_CONSTRAINTS(BASIC_CONSTRAINTS *a, unsigned char **out)
{
return ASN1_item_i2d((ASN1_VALUE *)a, out, &BASIC_CONSTRAINTS_it);
}
BASIC_CONSTRAINTS *
BASIC_CONSTRAINTS_new(void)
{
return (BASIC_CONSTRAINTS *)ASN1_item_new(&BASIC_CONSTRAINTS_it);
}
void
BASIC_CONSTRAINTS_free(BASIC_CONSTRAINTS *a)
{
ASN1_item_free((ASN1_VALUE *)a, &BASIC_CONSTRAINTS_it);
}
static STACK_OF(CONF_VALUE) *
i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method, BASIC_CONSTRAINTS *bcons,
STACK_OF(CONF_VALUE) *extlist)
{
STACK_OF(CONF_VALUE) *free_extlist = NULL;
if (extlist == NULL) {
if ((free_extlist = extlist = sk_CONF_VALUE_new_null()) == NULL)
return NULL;
}
if (!X509V3_add_value_bool("CA", bcons->ca, &extlist))
goto err;
if (!X509V3_add_value_int("pathlen", bcons->pathlen, &extlist))
goto err;
return extlist;
err:
sk_CONF_VALUE_pop_free(free_extlist, X509V3_conf_free);
return NULL;
}
static BASIC_CONSTRAINTS *
v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
STACK_OF(CONF_VALUE) *values)
{
BASIC_CONSTRAINTS *bcons = NULL;
CONF_VALUE *val;
int i;
if (!(bcons = BASIC_CONSTRAINTS_new())) {
X509V3error(ERR_R_MALLOC_FAILURE);
return NULL;
}
for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
val = sk_CONF_VALUE_value(values, i);
if (!strcmp(val->name, "CA")) {
if (!X509V3_get_value_bool(val, &bcons->ca))
goto err;
} else if (!strcmp(val->name, "pathlen")) {
if (!X509V3_get_value_int(val, &bcons->pathlen))
goto err;
} else {
X509V3error(X509V3_R_INVALID_NAME);
X509V3_conf_err(val);
goto err;
}
}
return bcons;
err:
BASIC_CONSTRAINTS_free(bcons);
return NULL;
}
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