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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/core_algorithm.c
2 * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
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
10 #include <openssl/core.h>
11 #include <openssl/core_numbers.h>
12 #include "internal/core.h"
13 #include "internal/property.h"
14 #include "internal/provider.h"
16 struct algorithm_data_st
{
18 int operation_id
; /* May be zero for finding them all */
19 int (*pre
)(OSSL_PROVIDER
*, int operation_id
, void *data
, int *result
);
20 void (*fn
)(OSSL_PROVIDER
*, const OSSL_ALGORITHM
*, int no_store
,
22 int (*post
)(OSSL_PROVIDER
*, int operation_id
, int no_store
, void *data
,
27 static int algorithm_do_this(OSSL_PROVIDER
*provider
, void *cbdata
)
29 struct algorithm_data_st
*data
= cbdata
;
30 int no_store
= 0; /* Assume caching is ok */
31 int first_operation
= 1;
32 int last_operation
= OSSL_OP__HIGHEST
;
36 if (data
->operation_id
!= 0)
37 first_operation
= last_operation
= data
->operation_id
;
39 for (cur_operation
= first_operation
;
40 cur_operation
<= last_operation
;
42 const OSSL_ALGORITHM
*map
= NULL
;
45 /* Do we fulfill pre-conditions? */
46 if (data
->pre
== NULL
) {
47 /* If there is no pre-condition function, assume "yes" */
50 if (!data
->pre(provider
, cur_operation
, data
->data
, &ret
))
51 /* Error, bail out! */
55 /* If pre-condition not fulfilled, go to the next operation */
59 map
= ossl_provider_query_operation(provider
, cur_operation
,
64 while (map
->algorithm_names
!= NULL
) {
65 const OSSL_ALGORITHM
*thismap
= map
++;
67 data
->fn(provider
, thismap
, no_store
, data
->data
);
70 /* Do we fulfill post-conditions? */
71 if (data
->post
== NULL
) {
72 /* If there is no post-condition function, assume "yes" */
75 if (!data
->post(provider
, cur_operation
, no_store
, data
->data
,
77 /* Error, bail out! */
81 /* If post-condition fulfilled, set general success */
89 void ossl_algorithm_do_all(OPENSSL_CTX
*libctx
, int operation_id
,
90 OSSL_PROVIDER
*provider
,
91 int (*pre
)(OSSL_PROVIDER
*, int operation_id
,
92 void *data
, int *result
),
93 void (*fn
)(OSSL_PROVIDER
*provider
,
94 const OSSL_ALGORITHM
*algo
,
95 int no_store
, void *data
),
96 int (*post
)(OSSL_PROVIDER
*, int operation_id
,
97 int no_store
, void *data
, int *result
),
100 struct algorithm_data_st cbdata
= { 0, };
102 cbdata
.libctx
= libctx
;
103 cbdata
.operation_id
= operation_id
;
109 if (provider
== NULL
)
110 ossl_provider_forall_loaded(libctx
, algorithm_do_this
, &cbdata
);
112 algorithm_do_this(provider
, &cbdata
);