Test/EVSE/GPL/openssl-1.1.1n/release/share/man/man7/ossl_store.7

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.\" ========================================================================
.\"
.IX Title "OSSL_STORE 7"
.TH OSSL_STORE 7 "2022-03-15" "1.1.1n" "OpenSSL"
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.nh
.SH "NAME"
ossl_store \- Store retrieval functions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
#include <openssl/store.h>
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
.SS "General"
.IX Subsection "General"
A \s-1STORE\s0 is a layer of functionality to retrieve a number of supported
objects from a repository of any kind, addressable as a filename or
as a \s-1URI.\s0
.PP
The functionality supports the pattern \*(L"open a channel to the
repository\*(R", \*(L"loop and retrieve one object at a time\*(R", and \*(L"finish up
by closing the channel\*(R".
.PP
The retrieved objects are returned as a wrapper type \fB\s-1OSSL_STORE_INFO\s0\fR,
from which an OpenSSL type can be retrieved.
.SS "\s-1URI\s0 schemes and loaders"
.IX Subsection "URI schemes and loaders"
Support for a \s-1URI\s0 scheme is called a \s-1STORE\s0 \*(L"loader\*(R", and can be added
dynamically from the calling application or from a loadable engine.
.PP
Support for the 'file' scheme is built into \f(CW\*(C`libcrypto\*(C'\fR.
See \fBossl_store\-file\fR\|(7) for more information.
.SS "\s-1UI_METHOD\s0 and pass phrases"
.IX Subsection "UI_METHOD and pass phrases"
The \fB\s-1OSS_STORE\s0\fR \s-1API\s0 does nothing to enforce any specific format or
encoding on the pass phrase that the \fB\s-1UI_METHOD\s0\fR provides.  However,
the pass phrase is expected to be \s-1UTF\-8\s0 encoded.  The result of any
other encoding is undefined.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
.SS "A generic call"
.IX Subsection "A generic call"
.Vb 1
\& OSSL_STORE_CTX *ctx = OSSL_STORE_open("file:/foo/bar/data.pem");
\&
\& /*
\&  * OSSL_STORE_eof() simulates file semantics for any repository to signal
\&  * that no more data can be expected
\&  */
\& while (!OSSL_STORE_eof(ctx)) {
\&     OSSL_STORE_INFO *info = OSSL_STORE_load(ctx);
\&
\&     /*
\&      * Do whatever is necessary with the OSSL_STORE_INFO,
\&      * here just one example
\&      */
\&     switch (OSSL_STORE_INFO_get_type(info)) {
\&     case OSSL_STORE_INFO_CERT:
\&         /* Print the X.509 certificate text */
\&         X509_print_fp(stdout, OSSL_STORE_INFO_get0_CERT(info));
\&         /* Print the X.509 certificate PEM output */
\&         PEM_write_X509(stdout, OSSL_STORE_INFO_get0_CERT(info));
\&         break;
\&     }
\& }
\&
\& OSSL_STORE_close(ctx);
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\s-1\fBOSSL_STORE_INFO\s0\fR\|(3), \s-1\fBOSSL_STORE_LOADER\s0\fR\|(3),
\&\fBOSSL_STORE_open\fR\|(3), \fBOSSL_STORE_expect\fR\|(3),
\&\s-1\fBOSSL_STORE_SEARCH\s0\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2016\-2021 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>.