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/*
* Copyright 1998-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (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 <stddef.h>
#include <openssl/x509.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include "crypto/evp.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 == NULL)
return 0;
if (ptype != V_ASN1_UNDEF) {
if (alg->parameter == NULL)
alg->parameter = ASN1_TYPE_new();
if (alg->parameter == NULL)
return 0;
}
ASN1_OBJECT_free(alg->algorithm);
alg->algorithm = aobj;
if (ptype == 0)
return 1;
if (ptype == V_ASN1_UNDEF) {
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 **paobj, int *pptype,
const void **ppval, const X509_ALGOR *algor)
{
if (paobj)
*paobj = algor->algorithm;
if (pptype) {
if (algor->parameter == NULL) {
*pptype = V_ASN1_UNDEF;
return;
} else
*pptype = algor->parameter->type;
if (ppval)
*ppval = algor->parameter->value.ptr;
}
}
/* 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 (md->flags & 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);
}
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);
}
int X509_ALGOR_copy(X509_ALGOR *dest, const X509_ALGOR *src)
{
if (src == NULL || dest == NULL)
return 0;
if (dest->algorithm)
ASN1_OBJECT_free(dest->algorithm);
dest->algorithm = NULL;
if (dest->parameter)
ASN1_TYPE_free(dest->parameter);
dest->parameter = NULL;
if (src->algorithm)
if ((dest->algorithm = OBJ_dup(src->algorithm)) == NULL)
return 0;
if (src->parameter) {
dest->parameter = ASN1_TYPE_new();
if (dest->parameter == NULL)
return 0;
/* Assuming this is also correct for a BOOL.
* set does copy as a side effect.
*/
if (ASN1_TYPE_set1(dest->parameter,
src->parameter->type, src->parameter->value.ptr) == 0)
return 0;
}
return 1;
}
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