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- /*
- * Copyright 2020-2023 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/opensslconf.h>
- #include <openssl/core.h>
- #include <openssl/core_dispatch.h>
- #include <openssl/core_names.h>
- #include <openssl/params.h>
- #include "prov/bio.h"
- #include "prov/provider_ctx.h"
- #include "prov/providercommon.h"
- #include "prov/implementations.h"
- #include "prov/provider_util.h"
- #include "prov/names.h"
- /*
- * Forward declarations to ensure that interface functions are correctly
- * defined.
- */
- static OSSL_FUNC_provider_gettable_params_fn base_gettable_params;
- static OSSL_FUNC_provider_get_params_fn base_get_params;
- static OSSL_FUNC_provider_query_operation_fn base_query;
- /* Functions provided by the core */
- static OSSL_FUNC_core_gettable_params_fn *c_gettable_params = NULL;
- static OSSL_FUNC_core_get_params_fn *c_get_params = NULL;
- /* Parameters we provide to the core */
- static const OSSL_PARAM base_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 *base_gettable_params(void *provctx)
- {
- return base_param_types;
- }
- static int base_get_params(void *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 Base 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 base_encoder[] = {
- #define ENCODER_PROVIDER "base"
- #include "encoders.inc"
- { NULL, NULL, NULL }
- #undef ENCODER_PROVIDER
- };
- static const OSSL_ALGORITHM base_decoder[] = {
- #define DECODER_PROVIDER "base"
- #include "decoders.inc"
- { NULL, NULL, NULL }
- #undef DECODER_PROVIDER
- };
- static const OSSL_ALGORITHM base_store[] = {
- #define STORE(name, _fips, func_table) \
- { name, "provider=base,fips=" _fips, (func_table) },
- #include "stores.inc"
- { NULL, NULL, NULL }
- #undef STORE
- };
- static const OSSL_ALGORITHM base_rands[] = {
- { PROV_NAMES_SEED_SRC, "provider=base", ossl_seed_src_functions },
- { NULL, NULL, NULL }
- };
- static const OSSL_ALGORITHM *base_query(void *provctx, int operation_id,
- int *no_cache)
- {
- *no_cache = 0;
- switch (operation_id) {
- case OSSL_OP_ENCODER:
- return base_encoder;
- case OSSL_OP_DECODER:
- return base_decoder;
- case OSSL_OP_STORE:
- return base_store;
- case OSSL_OP_RAND:
- return base_rands;
- }
- return NULL;
- }
- static void base_teardown(void *provctx)
- {
- BIO_meth_free(ossl_prov_ctx_get0_core_bio_method(provctx));
- ossl_prov_ctx_free(provctx);
- }
- /* Functions we provide to the core */
- static const OSSL_DISPATCH base_dispatch_table[] = {
- { OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))base_teardown },
- { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS,
- (void (*)(void))base_gettable_params },
- { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))base_get_params },
- { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))base_query },
- OSSL_DISPATCH_END
- };
- OSSL_provider_init_fn ossl_base_provider_init;
- int ossl_base_provider_init(const OSSL_CORE_HANDLE *handle,
- const OSSL_DISPATCH *in, const OSSL_DISPATCH **out,
- void **provctx)
- {
- OSSL_FUNC_core_get_libctx_fn *c_get_libctx = NULL;
- BIO_METHOD *corebiometh;
- if (!ossl_prov_bio_from_dispatch(in))
- return 0;
- for (; in->function_id != 0; in++) {
- switch (in->function_id) {
- case OSSL_FUNC_CORE_GETTABLE_PARAMS:
- c_gettable_params = OSSL_FUNC_core_gettable_params(in);
- break;
- case OSSL_FUNC_CORE_GET_PARAMS:
- c_get_params = OSSL_FUNC_core_get_params(in);
- break;
- case OSSL_FUNC_CORE_GET_LIBCTX:
- c_get_libctx = OSSL_FUNC_core_get_libctx(in);
- break;
- default:
- /* Just ignore anything we don't understand */
- break;
- }
- }
- if (c_get_libctx == NULL)
- return 0;
- /*
- * We want to make sure that all calls from this provider that requires
- * a library context use the same context as the one used to call our
- * functions. We do that by passing it along in the provider context.
- *
- * This only works for built-in providers. Most providers should
- * create their own library context.
- */
- if ((*provctx = ossl_prov_ctx_new()) == NULL
- || (corebiometh = ossl_bio_prov_init_bio_method()) == NULL) {
- ossl_prov_ctx_free(*provctx);
- *provctx = NULL;
- return 0;
- }
- ossl_prov_ctx_set0_libctx(*provctx,
- (OSSL_LIB_CTX *)c_get_libctx(handle));
- ossl_prov_ctx_set0_handle(*provctx, handle);
- ossl_prov_ctx_set0_core_bio_method(*provctx, corebiometh);
- *out = base_dispatch_table;
- return 1;
- }
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