mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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179 lines
5.5 KiB
C
179 lines
5.5 KiB
C
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/*
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* Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <string.h>
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#include <stdio.h>
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#include <openssl/opensslconf.h>
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#include <openssl/core.h>
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#include <openssl/core_dispatch.h>
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#include <openssl/core_names.h>
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#include <openssl/params.h>
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#include "prov/bio.h"
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#include "prov/provider_ctx.h"
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#include "prov/providercommon.h"
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#include "prov/implementations.h"
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#include "prov/provider_util.h"
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#include "internal/nelem.h"
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/*
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* Forward declarations to ensure that interface functions are correctly
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* defined.
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*/
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static OSSL_FUNC_provider_gettable_params_fn base_gettable_params;
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static OSSL_FUNC_provider_get_params_fn base_get_params;
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static OSSL_FUNC_provider_query_operation_fn base_query;
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/* Functions provided by the core */
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static OSSL_FUNC_core_gettable_params_fn *c_gettable_params = NULL;
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static OSSL_FUNC_core_get_params_fn *c_get_params = NULL;
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/* Parameters we provide to the core */
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static const OSSL_PARAM base_param_types[] = {
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OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0),
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OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
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OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0),
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OSSL_PARAM_DEFN(OSSL_PROV_PARAM_STATUS, OSSL_PARAM_INTEGER, NULL, 0),
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OSSL_PARAM_END
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};
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static const OSSL_PARAM *base_gettable_params(void *provctx)
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{
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return base_param_types;
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}
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static int base_get_params(void *provctx, OSSL_PARAM params[])
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{
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OSSL_PARAM *p;
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p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME);
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if (p != NULL
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&& !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Base Provider"))
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return 0;
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p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION);
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if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR))
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return 0;
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p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO);
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if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR))
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return 0;
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p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_STATUS);
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if (p != NULL && !OSSL_PARAM_set_int(p, ossl_prov_is_running()))
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return 0;
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return 1;
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}
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static const OSSL_ALGORITHM base_encoder[] = {
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#define ENCODER_PROVIDER "base"
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#include "encoders.inc"
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{ NULL, NULL, NULL }
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#undef ENCODER_PROVIDER
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};
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static const OSSL_ALGORITHM base_decoder[] = {
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#define DECODER_PROVIDER "base"
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#include "decoders.inc"
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{ NULL, NULL, NULL }
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#undef DECODER_PROVIDER
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};
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static const OSSL_ALGORITHM base_store[] = {
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#define STORE(name, _fips, func_table) \
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{ name, "provider=base,fips=" _fips, (func_table) },
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#include "stores.inc"
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{ NULL, NULL, NULL }
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#undef STORE
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};
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static const OSSL_ALGORITHM *base_query(void *provctx, int operation_id,
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int *no_cache)
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{
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*no_cache = 0;
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switch (operation_id) {
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case OSSL_OP_ENCODER:
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return base_encoder;
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case OSSL_OP_DECODER:
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return base_decoder;
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case OSSL_OP_STORE:
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return base_store;
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}
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return NULL;
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}
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static void base_teardown(void *provctx)
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{
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BIO_meth_free(ossl_prov_ctx_get0_core_bio_method(provctx));
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ossl_prov_ctx_free(provctx);
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}
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/* Functions we provide to the core */
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static const OSSL_DISPATCH base_dispatch_table[] = {
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{ OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))base_teardown },
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{ OSSL_FUNC_PROVIDER_GETTABLE_PARAMS,
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(void (*)(void))base_gettable_params },
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{ OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))base_get_params },
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{ OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))base_query },
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{ 0, NULL }
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};
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OSSL_provider_init_fn ossl_base_provider_init;
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int ossl_base_provider_init(const OSSL_CORE_HANDLE *handle,
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const OSSL_DISPATCH *in, const OSSL_DISPATCH **out,
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void **provctx)
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{
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OSSL_FUNC_core_get_libctx_fn *c_get_libctx = NULL;
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BIO_METHOD *corebiometh;
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if (!ossl_prov_bio_from_dispatch(in))
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return 0;
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for (; in->function_id != 0; in++) {
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switch (in->function_id) {
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case OSSL_FUNC_CORE_GETTABLE_PARAMS:
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c_gettable_params = OSSL_FUNC_core_gettable_params(in);
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break;
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case OSSL_FUNC_CORE_GET_PARAMS:
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c_get_params = OSSL_FUNC_core_get_params(in);
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break;
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case OSSL_FUNC_CORE_GET_LIBCTX:
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c_get_libctx = OSSL_FUNC_core_get_libctx(in);
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break;
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default:
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/* Just ignore anything we don't understand */
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break;
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}
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}
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if (c_get_libctx == NULL)
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return 0;
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/*
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* We want to make sure that all calls from this provider that requires
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* a library context use the same context as the one used to call our
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* functions. We do that by passing it along in the provider context.
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*
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* This only works for built-in providers. Most providers should
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* create their own library context.
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*/
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if ((*provctx = ossl_prov_ctx_new()) == NULL
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|| (corebiometh = ossl_bio_prov_init_bio_method()) == NULL) {
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ossl_prov_ctx_free(*provctx);
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*provctx = NULL;
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return 0;
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}
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ossl_prov_ctx_set0_libctx(*provctx,
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(OSSL_LIB_CTX *)c_get_libctx(handle));
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ossl_prov_ctx_set0_handle(*provctx, handle);
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ossl_prov_ctx_set0_core_bio_method(*provctx, corebiometh);
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*out = base_dispatch_table;
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return 1;
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}
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