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OSSL_STORE_expect.3
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" OSSL_STORE_expect, OSSL_STORE_supports_search, OSSL_STORE_find \&\- Specify what object type is expected .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/store.h> \& \& int OSSL_STORE_expect(OSSL_STORE_CTX *ctx, int expected_type); \& \& int OSSL_STORE_supports_search(OSSL_STORE_CTX *ctx, int criterion_type); \& \& int OSSL_STORE_find(OSSL_STORE_CTX *ctx, OSSL_STORE_SEARCH *search); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBOSSL_STORE_expect()\fR helps applications filter what \fBOSSL_STORE_load()\fR returns by specifying a \fB\s-1OSSL_STORE_INFO\s0\fR type. For example, if \f(CW\*(C`file:/foo/bar/store.pem\*(C'\fR contains several different objects and only the certificates are interesting, the application can simply say that it expects the type \fB\s-1OSSL_STORE_INFO_CERT\s0\fR. All known object types (see \*(L"\s-1SUPPORTED OBJECTS\*(R"\s0 in \s-1\fBOSSL_STORE_INFO\s0\fR\|(3)) except for \fB\s-1OSSL_STORE_INFO_NAME\s0\fR are supported. .PP \&\fBOSSL_STORE_find()\fR helps applications specify a criterion for a more fine grained search of objects. .PP \&\fBOSSL_STORE_supports_search()\fR checks if the loader of the given \s-1OSSL_STORE\s0 context supports the given search type. See \*(L"\s-1SUPPORTED CRITERION TYPES\*(R"\s0 in \s-1OSSL_STORE_SEARCH\s0 for information on the supported search criterion types. .PP \&\fBOSSL_STORE_expect()\fR and OSSL_STORE_find \fImust\fR be called before the first \&\fBOSSL_STORE_load()\fR of a given session, or they will fail. .SH "NOTES" .IX Header "NOTES" If a more elaborate filter is required by the application, a better choice would be to use a post-processing function. See \fBOSSL_STORE_open\fR\|(3) for more information. .PP However, some loaders may take advantage of the knowledge of an expected type to make object retrieval more efficient, so if a single type is expected, this method is usually preferable. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBOSSL_STORE_expect()\fR returns 1 on success, or 0 on failure. .PP \&\fBOSSL_STORE_supports_search()\fR returns 1 if the criterion is supported, or 0 otherwise. .PP \&\fBOSSL_STORE_find()\fR returns 1 on success, or 0 on failure. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBossl_store\fR\|(7), \s-1\fBOSSL_STORE_INFO\s0\fR\|(3), \s-1\fBOSSL_STORE_SEARCH\s0\fR\|(3), \&\fBOSSL_STORE_load\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" \&\fBOSSL_STORE_expect()\fR, \fBOSSL_STORE_supports_search()\fR and \fBOSSL_STORE_find()\fR were added in OpenSSL 1.1.1. .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2018\-2019 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
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