OSSL_STORE(7ossl) OpenSSL OSSL_STORE(7ossl)
NAME
ossl_store - Store retrieval functions
SYNOPSIS
#include <openssl/store.h>
DESCRIPTION
General
A STORE 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 URI.
The functionality supports the pattern "open a channel to the
repository", "loop and retrieve one object at a time", and "finish up
by closing the channel".
The retrieved objects are returned as a wrapper type OSSL_STORE_INFO,
from which an OpenSSL type can be retrieved.
URI schemes and loaders
Support for a URI scheme is called a STORE "loader", and can be added
dynamically from the calling application or from a loadable engine.
Support for the 'file' scheme is built into "libcrypto". See
ossl_store-file(7) for more information.
UI_METHOD and pass phrases
The OSS_STORE API does nothing to enforce any specific format or
encoding on the pass phrase that the UI_METHOD provides. However, the
pass phrase is expected to be UTF-8 encoded. The result of any other
encoding is undefined.
EXAMPLES
A generic call
#include <openssl/ui.h> /* for UI_get_default_method */
#include <openssl/store.h>
OSSL_STORE_CTX *ctx = OSSL_STORE_open("file:/foo/bar/data.pem",
UI_get_default_method(), NULL, NULL, NULL);
/*
* 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_INFO_free(info);
}
OSSL_STORE_close(ctx);
SEE ALSO
OSSL_STORE_INFO(3), OSSL_STORE_LOADER(3), OSSL_STORE_open(3),
OSSL_STORE_expect(3), OSSL_STORE_SEARCH(3)
COPYRIGHT
Copyright 2016-2024 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.
3.3.2 2024-09-04 OSSL_STORE(7ossl)
openssl 3.3.2 - Generated Tue Oct 1 16:41:27 CDT 2024