1OSSL_STORE_EXPECT(3)                OpenSSL               OSSL_STORE_EXPECT(3)
2
3
4

NAME

6       OSSL_STORE_expect, OSSL_STORE_supports_search, OSSL_STORE_find -
7       Specify what object type is expected
8

SYNOPSIS

10        #include <openssl/store.h>
11
12        int OSSL_STORE_expect(OSSL_STORE_CTX *ctx, int expected_type);
13
14        int OSSL_STORE_supports_search(OSSL_STORE_CTX *ctx, int criterion_type);
15
16        int OSSL_STORE_find(OSSL_STORE_CTX *ctx, OSSL_STORE_SEARCH *search);
17

DESCRIPTION

19       OSSL_STORE_expect() helps applications filter what OSSL_STORE_load()
20       returns by specifying a OSSL_STORE_INFO type.  For example, if
21       "file:/foo/bar/store.pem" contains several different objects and only
22       the certificates are interesting, the application can simply say that
23       it expects the type OSSL_STORE_INFO_CERT.  All known object types (see
24       "SUPPORTED OBJECTS" in OSSL_STORE_INFO(3)) except for
25       OSSL_STORE_INFO_NAME are supported.
26
27       OSSL_STORE_find() helps applications specify a criterion for a more
28       fine grained search of objects.
29
30       OSSL_STORE_supports_search() checks if the loader of the given
31       OSSL_STORE context supports the given search type.  See "SUPPORTED
32       CRITERION TYPES" in OSSL_STORE_SEARCH for information on the supported
33       search criterion types.
34
35       OSSL_STORE_expect() and OSSL_STORE_find must be called before the first
36       OSSL_STORE_load() of a given session, or they will fail.
37

NOTES

39       If a more elaborate filter is required by the application, a better
40       choice would be to use a post-processing function.  See
41       OSSL_STORE_open(3) for more information.
42
43       However, some loaders may take advantage of the knowledge of an
44       expected type to make object retrieval more efficient, so if a single
45       type is expected, this method is usually preferable.
46

RETURN VALUES

48       OSSL_STORE_expect() returns 1 on success, or 0 on failure.
49
50       OSSL_STORE_supports_search() returns 1 if the criterion is supported,
51       or 0 otherwise.
52
53       OSSL_STORE_find() returns 1 on success, or 0 on failure.
54

SEE ALSO

56       ossl_store(7), OSSL_STORE_INFO(3), OSSL_STORE_SEARCH(3),
57       OSSL_STORE_load(3)
58

HISTORY

60       OSSL_STORE_expect(), OSSL_STORE_supports_search() and OSSL_STORE_find()
61       were added in OpenSSL 1.1.1.
62
64       Copyright 2018-2019 The OpenSSL Project Authors. All Rights Reserved.
65
66       Licensed under the OpenSSL license (the "License").  You may not use
67       this file except in compliance with the License.  You can obtain a copy
68       in the file LICENSE in the source distribution or at
69       <https://www.openssl.org/source/license.html>.
70
71
72
731.1.1g                            2020-04-23              OSSL_STORE_EXPECT(3)
Impressum