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9e11fe0d RL |
1 | /* |
2 | * Copyright 2019 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 <stddef.h> | |
11 | ||
12 | #include <openssl/core.h> | |
13 | #include "internal/cryptlib.h" | |
14 | #include "internal/core.h" | |
15 | #include "internal/property.h" | |
16 | #include "internal/provider.h" | |
17 | ||
18 | struct construct_data_st { | |
19 | OPENSSL_CTX *libctx; | |
20 | OSSL_METHOD_STORE *store; | |
21 | int operation_id; | |
22 | int force_store; | |
23 | OSSL_METHOD_CONSTRUCT_METHOD *mcm; | |
24 | void *mcm_data; | |
25 | }; | |
26 | ||
84d167f6 RL |
27 | static void ossl_method_construct_this(OSSL_PROVIDER *provider, |
28 | const OSSL_ALGORITHM *algo, | |
29 | int no_store, void *cbdata) | |
9e11fe0d RL |
30 | { |
31 | struct construct_data_st *data = cbdata; | |
84d167f6 | 32 | void *method = NULL; |
9e11fe0d | 33 | |
84d167f6 RL |
34 | if ((method = data->mcm->construct(algo->algorithm_name, |
35 | algo->implementation, provider, | |
36 | data->mcm_data)) == NULL) | |
37 | return; | |
38 | ||
39 | /* | |
40 | * Note regarding putting the method in stores: | |
41 | * | |
42 | * we don't need to care if it actually got in or not here. | |
43 | * If it didn't get in, it will simply not be available when | |
44 | * ossl_method_construct() tries to get it from the store. | |
45 | * | |
46 | * It is *expected* that the put function increments the refcnt | |
47 | * of the passed method. | |
48 | */ | |
49 | ||
50 | if (data->force_store || !no_store) { | |
a3830831 | 51 | /* |
84d167f6 RL |
52 | * If we haven't been told not to store, |
53 | * add to the global store | |
a3830831 | 54 | */ |
c1d56231 RL |
55 | data->mcm->put(data->libctx, NULL, method, provider, |
56 | data->operation_id, algo->algorithm_name, | |
84d167f6 | 57 | algo->property_definition, data->mcm_data); |
9e11fe0d RL |
58 | } |
59 | ||
c1d56231 RL |
60 | data->mcm->put(data->libctx, data->store, method, provider, |
61 | data->operation_id, algo->algorithm_name, | |
62 | algo->property_definition, data->mcm_data); | |
84d167f6 RL |
63 | |
64 | /* refcnt-- because we're dropping the reference */ | |
65 | data->mcm->destruct(method, data->mcm_data); | |
9e11fe0d RL |
66 | } |
67 | ||
68 | void *ossl_method_construct(OPENSSL_CTX *libctx, int operation_id, | |
69 | const char *name, const char *propquery, | |
70 | int force_store, | |
71 | OSSL_METHOD_CONSTRUCT_METHOD *mcm, void *mcm_data) | |
72 | { | |
73 | void *method = NULL; | |
74 | ||
2e49c054 | 75 | if ((method = |
2ccb1b4e RL |
76 | mcm->get(libctx, NULL, operation_id, name, propquery, mcm_data)) |
77 | == NULL) { | |
9e11fe0d RL |
78 | struct construct_data_st cbdata; |
79 | ||
80 | /* | |
81 | * We have a temporary store to be able to easily search among new | |
82 | * items, or items that should find themselves in the global store. | |
83 | */ | |
1aedc35f | 84 | if ((cbdata.store = mcm->alloc_tmp_store(libctx)) == NULL) |
9e11fe0d RL |
85 | goto fin; |
86 | ||
87 | cbdata.libctx = libctx; | |
88 | cbdata.operation_id = operation_id; | |
89 | cbdata.force_store = force_store; | |
90 | cbdata.mcm = mcm; | |
91 | cbdata.mcm_data = mcm_data; | |
84d167f6 RL |
92 | ossl_algorithm_do_all(libctx, operation_id, NULL, |
93 | ossl_method_construct_this, &cbdata); | |
9e11fe0d | 94 | |
2ccb1b4e RL |
95 | method = mcm->get(libctx, cbdata.store, operation_id, name, |
96 | propquery, mcm_data); | |
9e11fe0d RL |
97 | mcm->dealloc_tmp_store(cbdata.store); |
98 | } | |
99 | ||
100 | fin: | |
101 | return method; | |
102 | } |