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