ref: bfe9da47cfa2f51ebef78c59332b5ba2deba306d
dir: /third_party/boringssl/src/crypto/x509/x_algor.c/
/*
* 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 <openssl/x509.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/digest.h>
#include <openssl/obj.h>
#include "../asn1/internal.h"
ASN1_SEQUENCE(X509_ALGOR) = {
ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT),
ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY)
} ASN1_SEQUENCE_END(X509_ALGOR)
ASN1_ITEM_TEMPLATE(X509_ALGORS) =
ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR)
ASN1_ITEM_TEMPLATE_END(X509_ALGORS)
IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)
IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS)
IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR)
int X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval)
{
if (!alg)
return 0;
if (ptype != V_ASN1_UNDEF) {
if (alg->parameter == NULL)
alg->parameter = ASN1_TYPE_new();
if (alg->parameter == NULL)
return 0;
}
if (alg) {
ASN1_OBJECT_free(alg->algorithm);
alg->algorithm = aobj;
}
if (ptype == 0)
return 1;
if (ptype == V_ASN1_UNDEF) {
if (alg->parameter) {
ASN1_TYPE_free(alg->parameter);
alg->parameter = NULL;
}
} else
ASN1_TYPE_set(alg->parameter, ptype, pval);
return 1;
}
void X509_ALGOR_get0(const ASN1_OBJECT **out_obj, int *out_param_type,
const void **out_param_value, const X509_ALGOR *alg)
{
if (out_obj != NULL) {
*out_obj = alg->algorithm;
}
if (out_param_type != NULL) {
int type = V_ASN1_UNDEF;
const void *value = NULL;
if (alg->parameter != NULL) {
type = alg->parameter->type;
value = asn1_type_value_as_pointer(alg->parameter);
}
*out_param_type = type;
if (out_param_value != NULL) {
*out_param_value = value;
}
}
}
/* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md)
{
int param_type;
if (EVP_MD_flags(md) & EVP_MD_FLAG_DIGALGID_ABSENT)
param_type = V_ASN1_UNDEF;
else
param_type = V_ASN1_NULL;
X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
}
/*
* X509_ALGOR_cmp returns 0 if |a| and |b| are equal and non-zero otherwise.
*/
int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
{
int rv;
rv = OBJ_cmp(a->algorithm, b->algorithm);
if (rv)
return rv;
if (!a->parameter && !b->parameter)
return 0;
return ASN1_TYPE_cmp(a->parameter, b->parameter);
}