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/*
* Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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 <string.h>
#include <stdio.h>
#include <openssl/core.h>
#include <openssl/core_dispatch.h>
#include <openssl/core_names.h>
#include <openssl/params.h>
#include "prov/implementations.h"
#include "prov/providercommon.h"
OSSL_provider_init_fn ossl_null_provider_init;
/* Parameters we provide to the core */
static const OSSL_PARAM null_param_types[] = {
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0),
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0),
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_STATUS, OSSL_PARAM_INTEGER, NULL, 0),
OSSL_PARAM_END
};
static const OSSL_PARAM *null_gettable_params(const OSSL_PROVIDER *prov)
{
return null_param_types;
}
static int null_get_params(const OSSL_PROVIDER *provctx, OSSL_PARAM params[])
{
OSSL_PARAM *p;
p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME);
if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Null Provider"))
return 0;
p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION);
if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR))
return 0;
p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO);
if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR))
return 0;
p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_STATUS);
if (p != NULL && !OSSL_PARAM_set_int(p, ossl_prov_is_running()))
return 0;
return 1;
}
static const OSSL_ALGORITHM *null_query(OSSL_PROVIDER *prov,
int operation_id,
int *no_cache)
{
*no_cache = 0;
return NULL;
}
/* Functions we provide to the core */
static const OSSL_DISPATCH null_dispatch_table[] = {
{ OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))null_gettable_params },
{ OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))null_get_params },
{ OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))null_query },
OSSL_DISPATCH_END
};
int ossl_null_provider_init(const OSSL_CORE_HANDLE *handle,
const OSSL_DISPATCH *in,
const OSSL_DISPATCH **out,
void **provctx)
{
*out = null_dispatch_table;
/* Could be anything - we don't use it */
*provctx = (void *)handle;
return 1;
}
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