1 /* 2 * Copyright 2020 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <string.h> 11 #include <stdio.h> 12 #include <openssl/core.h> 13 #include <openssl/core_dispatch.h> 14 #include <openssl/core_names.h> 15 #include <openssl/params.h> 16 #include "prov/implementations.h" 17 #include "prov/providercommon.h" 18 19 OSSL_provider_init_fn ossl_null_provider_init; 20 21 /* Parameters we provide to the core */ 22 static const OSSL_PARAM null_param_types[] = { 23 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0), 24 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0), 25 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0), 26 OSSL_PARAM_DEFN(OSSL_PROV_PARAM_STATUS, OSSL_PARAM_INTEGER, NULL, 0), 27 OSSL_PARAM_END 28 }; 29 30 static const OSSL_PARAM *null_gettable_params(const OSSL_PROVIDER *prov) 31 { 32 return null_param_types; 33 } 34 35 static int null_get_params(const OSSL_PROVIDER *provctx, OSSL_PARAM params[]) 36 { 37 OSSL_PARAM *p; 38 39 p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME); 40 if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Null Provider")) 41 return 0; 42 p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION); 43 if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR)) 44 return 0; 45 p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO); 46 if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR)) 47 return 0; 48 p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_STATUS); 49 if (p != NULL && !OSSL_PARAM_set_int(p, ossl_prov_is_running())) 50 return 0; 51 return 1; 52 } 53 54 static const OSSL_ALGORITHM *null_query(OSSL_PROVIDER *prov, 55 int operation_id, 56 int *no_cache) 57 { 58 *no_cache = 0; 59 return NULL; 60 } 61 62 /* Functions we provide to the core */ 63 static const OSSL_DISPATCH null_dispatch_table[] = { 64 { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))null_gettable_params }, 65 { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))null_get_params }, 66 { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))null_query }, 67 { 0, NULL } 68 }; 69 70 int ossl_null_provider_init(const OSSL_CORE_HANDLE *handle, 71 const OSSL_DISPATCH *in, 72 const OSSL_DISPATCH **out, 73 void **provctx) 74 { 75 *out = null_dispatch_table; 76 77 /* Could be anything - we don't use it */ 78 *provctx = (void *)handle; 79 return 1; 80 } 81