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/* $OpenBSD: x_algor.c,v 1.35 2023/11/01 20:25:27 tb Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 2000.
*/
/* ====================================================================
* Copyright (c) 2000 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 <stddef.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include "x509_local.h"
static const ASN1_TEMPLATE X509_ALGOR_seq_tt[] = {
{
.offset = offsetof(X509_ALGOR, algorithm),
.field_name = "algorithm",
.item = &ASN1_OBJECT_it,
},
{
.flags = ASN1_TFLG_OPTIONAL,
.offset = offsetof(X509_ALGOR, parameter),
.field_name = "parameter",
.item = &ASN1_ANY_it,
},
};
const ASN1_ITEM X509_ALGOR_it = {
.itype = ASN1_ITYPE_SEQUENCE,
.utype = V_ASN1_SEQUENCE,
.templates = X509_ALGOR_seq_tt,
.tcount = sizeof(X509_ALGOR_seq_tt) / sizeof(ASN1_TEMPLATE),
.size = sizeof(X509_ALGOR),
.sname = "X509_ALGOR",
};
static const ASN1_TEMPLATE X509_ALGORS_item_tt = {
.flags = ASN1_TFLG_SEQUENCE_OF,
.tag = 0,
.offset = 0,
.field_name = "algorithms",
.item = &X509_ALGOR_it,
};
const ASN1_ITEM X509_ALGORS_it = {
.itype = ASN1_ITYPE_PRIMITIVE,
.utype = -1,
.templates = &X509_ALGORS_item_tt,
.tcount = 0,
.funcs = NULL,
.size = 0,
.sname = "X509_ALGORS",
};
X509_ALGOR *
d2i_X509_ALGOR(X509_ALGOR **a, const unsigned char **in, long len)
{
return (X509_ALGOR *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
&X509_ALGOR_it);
}
int
i2d_X509_ALGOR(X509_ALGOR *a, unsigned char **out)
{
return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ALGOR_it);
}
X509_ALGOR *
X509_ALGOR_new(void)
{
return (X509_ALGOR *)ASN1_item_new(&X509_ALGOR_it);
}
void
X509_ALGOR_free(X509_ALGOR *a)
{
ASN1_item_free((ASN1_VALUE *)a, &X509_ALGOR_it);
}
X509_ALGORS *
d2i_X509_ALGORS(X509_ALGORS **a, const unsigned char **in, long len)
{
return (X509_ALGORS *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
&X509_ALGORS_it);
}
int
i2d_X509_ALGORS(X509_ALGORS *a, unsigned char **out)
{
return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ALGORS_it);
}
X509_ALGOR *
X509_ALGOR_dup(X509_ALGOR *x)
{
return ASN1_item_dup(&X509_ALGOR_it, x);
}
static int
X509_ALGOR_set0_obj(X509_ALGOR *alg, ASN1_OBJECT *aobj)
{
ASN1_OBJECT_free(alg->algorithm);
alg->algorithm = aobj;
return 1;
}
static int
X509_ALGOR_set0_parameter(X509_ALGOR *alg, int parameter_type,
void *parameter_value)
{
if (parameter_type == V_ASN1_UNDEF) {
ASN1_TYPE_free(alg->parameter);
alg->parameter = NULL;
return 1;
}
if (alg->parameter == NULL)
alg->parameter = ASN1_TYPE_new();
if (alg->parameter == NULL)
return 0;
if (parameter_type != 0)
ASN1_TYPE_set(alg->parameter, parameter_type, parameter_value);
return 1;
}
int
X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int parameter_type,
void *parameter_value)
{
if (alg == NULL)
return 0;
if (!X509_ALGOR_set0_parameter(alg, parameter_type, parameter_value))
return 0;
if (!X509_ALGOR_set0_obj(alg, aobj))
return 0;
return 1;
}
void
X509_ALGOR_get0(const ASN1_OBJECT **out_aobj, int *out_type,
const void **out_value, const X509_ALGOR *alg)
{
int type = V_ASN1_UNDEF;
const void *value = NULL;
if (out_aobj != NULL)
*out_aobj = alg->algorithm;
/* Ensure out_value is not left uninitialized if out_type is NULL. */
if (out_value != NULL)
*out_value = NULL;
if (out_type == NULL)
return;
if (alg->parameter != NULL) {
type = alg->parameter->type;
value = alg->parameter->value.ptr;
}
*out_type = type;
if (out_value != NULL)
*out_value = value;
}
int
X509_ALGOR_set_evp_md(X509_ALGOR *alg, const EVP_MD *md)
{
ASN1_OBJECT *aobj;
int param_type = V_ASN1_NULL;
if ((EVP_MD_flags(md) & EVP_MD_FLAG_DIGALGID_ABSENT) != 0)
param_type = V_ASN1_UNDEF;
if ((aobj = OBJ_nid2obj(EVP_MD_type(md))) == NULL)
return 0;
return X509_ALGOR_set0(alg, aobj, param_type, NULL);
}
void
X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md)
{
(void)X509_ALGOR_set_evp_md(alg, md);
}
int
X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
{
int cmp;
if ((cmp = OBJ_cmp(a->algorithm, b->algorithm)) != 0)
return cmp;
if (a->parameter == NULL && b->parameter == NULL)
return 0;
return ASN1_TYPE_cmp(a->parameter, b->parameter);
}
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