a883c02faa
This function is used to traverse all the implementations provided by one provider, or all implementation for a specific operation across all loaded providers, or both, and execute a given function for each occurence. This will be used by ossl_method_construct(), but also by information processing functions. Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/9356)
63 lines
2 KiB
Text
63 lines
2 KiB
Text
=pod
|
|
|
|
=head1 NAME
|
|
|
|
ossl_algorithm_do_all - generic algorithm implementation iterator
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
void ossl_algorithm_do_all(OPENSSL_CTX *libctx, int operation_id,
|
|
OSSL_PROVIDER *provider,
|
|
void (*fn)(OSSL_PROVIDER *provider,
|
|
const OSSL_ALGORITHM *algo,
|
|
int no_store, void *data),
|
|
void *data)
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
ossl_algorithm_do_all() looks up every algorithm it can find, given a
|
|
library context I<libctx>, an operation identity I<operation_id> and a
|
|
provider I<provider>.
|
|
I<libctx> may be NULL to signify that the default library context should
|
|
be used.
|
|
I<operation_id> may be zero to signify that all kinds of operations
|
|
will be looked up.
|
|
I<provider> may be NULL to signify that all loaded providers will be
|
|
queried.
|
|
|
|
For each implementation found, the function I<fn> is called with the
|
|
I<provider> for the implementation, the algorithm descriptor I<algo>,
|
|
the flag I<no_store> indicating whether the algorithm descriptor may
|
|
be remembered or not, and the caller I<data> that was passed to
|
|
ossl_algorithm_do_all().
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
ossl_algorithm_do_all() doesn't return any value.
|
|
|
|
=head1 NOTES
|
|
|
|
The function described here are mainly useful for discovery, and
|
|
possibly display of what has been discovered, for example an
|
|
application that wants to display the loaded providers and what they
|
|
may offer, but also for constructors, such as
|
|
L<ossl_construct_method(3)>.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<ossl_construct_method(3)>, L<EVP_MAC_do_all(3)>
|
|
|
|
=head1 HISTORY
|
|
|
|
This functionality was added to OpenSSL 3.0.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2019 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
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|