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7b4344ac P |
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_numbers.h> | |
14 | #include <openssl/core_names.h> | |
15 | #include <openssl/params.h> | |
16 | #include "prov/implementations.h" | |
17 | ||
18 | OSSL_provider_init_fn ossl_null_provider_init; | |
19 | ||
7b4344ac P |
20 | /* Parameters we provide to the core */ |
21 | static const OSSL_ITEM null_param_types[] = { | |
22 | { OSSL_PARAM_UTF8_PTR, OSSL_PROV_PARAM_NAME }, | |
23 | { OSSL_PARAM_UTF8_PTR, OSSL_PROV_PARAM_VERSION }, | |
24 | { OSSL_PARAM_UTF8_PTR, OSSL_PROV_PARAM_BUILDINFO }, | |
25 | { 0, NULL } | |
26 | }; | |
27 | ||
28 | static const OSSL_ITEM *null_gettable_params(const OSSL_PROVIDER *prov) | |
29 | { | |
30 | return null_param_types; | |
31 | } | |
32 | ||
33 | static int null_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[]) | |
34 | { | |
35 | OSSL_PARAM *p; | |
36 | ||
37 | p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME); | |
38 | if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Null Provider")) | |
39 | return 0; | |
40 | p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION); | |
41 | if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR)) | |
42 | return 0; | |
43 | p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO); | |
44 | if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR)) | |
45 | return 0; | |
46 | ||
47 | return 1; | |
48 | } | |
49 | ||
50 | static const OSSL_ALGORITHM *null_query(OSSL_PROVIDER *prov, | |
51 | int operation_id, | |
52 | int *no_cache) | |
53 | { | |
54 | *no_cache = 0; | |
55 | return NULL; | |
56 | } | |
57 | ||
58 | /* Functions we provide to the core */ | |
59 | static const OSSL_DISPATCH null_dispatch_table[] = { | |
60 | { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))null_gettable_params }, | |
61 | { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))null_get_params }, | |
62 | { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))null_query }, | |
63 | { 0, NULL } | |
64 | }; | |
65 | ||
d40b42ab | 66 | int ossl_null_provider_init(const OSSL_CORE_HANDLE *handle, |
7b4344ac P |
67 | const OSSL_DISPATCH *in, |
68 | const OSSL_DISPATCH **out, | |
69 | void **provctx) | |
70 | { | |
7b4344ac P |
71 | *out = null_dispatch_table; |
72 | ||
d40b42ab MC |
73 | /* Could be anything - we don't use it */ |
74 | *provctx = (void *)handle; | |
7b4344ac P |
75 | return 1; |
76 | } |