213 lines
6.9 KiB
Plaintext
213 lines
6.9 KiB
Plaintext
|
=pod
|
||
|
|
|
||
|
|
=head1 NAME
|
||
|
|
|
||
|
|
X509_LOOKUP, X509_LOOKUP_TYPE,
|
||
|
|
X509_LOOKUP_new, X509_LOOKUP_free, X509_LOOKUP_init,
|
||
|
|
X509_LOOKUP_shutdown,
|
||
|
|
X509_LOOKUP_set_method_data, X509_LOOKUP_get_method_data,
|
||
|
|
X509_LOOKUP_ctrl,
|
||
|
|
X509_LOOKUP_load_file, X509_LOOKUP_add_dir,
|
||
|
|
X509_LOOKUP_get_store, X509_LOOKUP_by_subject,
|
||
|
|
X509_LOOKUP_by_issuer_serial, X509_LOOKUP_by_fingerprint,
|
||
|
|
X509_LOOKUP_by_alias
|
||
|
|
- OpenSSL certificate lookup mechanisms
|
||
|
|
|
||
|
|
=head1 SYNOPSIS
|
||
|
|
|
||
|
|
#include <openssl/x509_vfy.h>
|
||
|
|
|
||
|
|
typedef x509_lookup_st X509_LOOKUP;
|
||
|
|
|
||
|
|
typedef enum X509_LOOKUP_TYPE;
|
||
|
|
|
||
|
|
X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
|
||
|
|
int X509_LOOKUP_init(X509_LOOKUP *ctx);
|
||
|
|
int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
|
||
|
|
void X509_LOOKUP_free(X509_LOOKUP *ctx);
|
||
|
|
|
||
|
|
int X509_LOOKUP_set_method_data(X509_LOOKUP *ctx, void *data);
|
||
|
|
void *X509_LOOKUP_get_method_data(const X509_LOOKUP *ctx);
|
||
|
|
|
||
|
|
int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
|
||
|
|
long argl, char **ret);
|
||
|
|
int X509_LOOKUP_load_file(X509_LOOKUP *ctx, char *name, long type);
|
||
|
|
int X509_LOOKUP_add_dir(X509_LOOKUP *ctx, char *name, long type);
|
||
|
|
|
||
|
|
X509_STORE *X509_LOOKUP_get_store(const X509_LOOKUP *ctx);
|
||
|
|
|
||
|
|
int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
|
||
|
|
X509_NAME *name, X509_OBJECT *ret);
|
||
|
|
int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
|
||
|
|
X509_NAME *name, ASN1_INTEGER *serial,
|
||
|
|
X509_OBJECT *ret);
|
||
|
|
int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
|
||
|
|
const unsigned char *bytes, int len,
|
||
|
|
X509_OBJECT *ret);
|
||
|
|
int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
|
||
|
|
const char *str, int len, X509_OBJECT *ret);
|
||
|
|
|
||
|
|
=head1 DESCRIPTION
|
||
|
|
|
||
|
|
The B<X509_LOOKUP> structure holds the information needed to look up
|
||
|
|
certificates and CRLs according to an associated L<X509_LOOKUP_METHOD(3)>.
|
||
|
|
Multiple B<X509_LOOKUP> instances can be added to an L<X509_STORE(3)>
|
||
|
|
to enable lookup in that store.
|
||
|
|
|
||
|
|
X509_LOOKUP_new() creates a new B<X509_LOOKUP> using the given lookup
|
||
|
|
I<method>.
|
||
|
|
It can also be created by calling L<X509_STORE_add_lookup(3)>, which
|
||
|
|
will associate an B<X509_STORE> with the lookup mechanism.
|
||
|
|
|
||
|
|
X509_LOOKUP_init() initializes the internal state and resources as
|
||
|
|
needed by the given B<X509_LOOKUP> to do its work.
|
||
|
|
|
||
|
|
X509_LOOKUP_shutdown() tears down the internal state and resources of
|
||
|
|
the given B<X509_LOOKUP>.
|
||
|
|
|
||
|
|
X509_LOOKUP_free() destructs the given B<X509_LOOKUP>.
|
||
|
|
|
||
|
|
X509_LOOKUP_set_method_data() associates a pointer to application data
|
||
|
|
to the given B<X509_LOOKUP>.
|
||
|
|
|
||
|
|
X509_LOOKUP_get_method_data() retrieves a pointer to application data
|
||
|
|
from the given B<X509_LOOKUP>.
|
||
|
|
|
||
|
|
X509_LOOKUP_ctrl() is used to set or get additional data to or from an
|
||
|
|
B<X509_LOOKUP> structure or its associated L<X509_LOOKUP_METHOD(3)>.
|
||
|
|
The arguments of the control command are passed via I<argc> and I<argl>,
|
||
|
|
its return value via I<*ret>.
|
||
|
|
The meaning of the arguments depends on the I<cmd> number of the
|
||
|
|
control command. In general, this function is not called directly, but
|
||
|
|
wrapped by a macro call, see below.
|
||
|
|
The control I<cmd>s known to OpenSSL are discussed in more depth
|
||
|
|
in L</Control Commands>.
|
||
|
|
|
||
|
|
X509_LOOKUP_load_file() passes a filename to be loaded immediately
|
||
|
|
into the associated B<X509_STORE>.
|
||
|
|
I<type> indicates what type of object is expected.
|
||
|
|
This can only be used with a lookup using the implementation
|
||
|
|
L<X509_LOOKUP_file(3)>.
|
||
|
|
|
||
|
|
X509_LOOKUP_add_dir() passes a directory specification from which
|
||
|
|
certificates and CRLs are loaded on demand into the associated
|
||
|
|
B<X509_STORE>.
|
||
|
|
I<type> indicates what type of object is expected.
|
||
|
|
This can only be used with a lookup using the implementation
|
||
|
|
L<X509_LOOKUP_hash_dir(3)>.
|
||
|
|
|
||
|
|
X509_LOOKUP_load_file(), X509_LOOKUP_add_dir(),
|
||
|
|
X509_LOOKUP_add_store(), and X509_LOOKUP_load_store() are implemented
|
||
|
|
as macros that use X509_LOOKUP_ctrl().
|
||
|
|
|
||
|
|
X509_LOOKUP_by_subject(), X509_LOOKUP_by_issuer_serial(),
|
||
|
|
X509_LOOKUP_by_fingerprint(), and X509_LOOKUP_by_alias() look up
|
||
|
|
certificates and CRLs in the L<X509_STORE(3)> associated with the
|
||
|
|
B<X509_LOOKUP> using different criteria, where the looked up object is
|
||
|
|
stored in I<ret>.
|
||
|
|
Some of the underlying B<X509_LOOKUP_METHOD>s will also cache objects
|
||
|
|
matching the criteria in the associated B<X509_STORE>, which makes it
|
||
|
|
possible to handle cases where the criteria have more than one hit.
|
||
|
|
|
||
|
|
=head2 File Types
|
||
|
|
|
||
|
|
X509_LOOKUP_load_file() and X509_LOOKUP_add_dir() take a I<type>,
|
||
|
|
which can be one of the following:
|
||
|
|
|
||
|
|
=over 4
|
||
|
|
|
||
|
|
=item B<X509_FILETYPE_PEM>
|
||
|
|
|
||
|
|
The file or files that are loaded are expected to be in PEM format.
|
||
|
|
|
||
|
|
=item B<X509_FILETYPE_ASN1>
|
||
|
|
|
||
|
|
The file or files that are loaded are expected to be in raw DER format.
|
||
|
|
|
||
|
|
=item B<X509_FILETYPE_DEFAULT>
|
||
|
|
|
||
|
|
The default certificate file or directory is used. In this case,
|
||
|
|
I<name> is ignored.
|
||
|
|
|
||
|
|
=begin comment
|
||
|
|
|
||
|
|
TODO
|
||
|
|
Document X509_get_default_cert_file_env(3),
|
||
|
|
X509_get_default_cert_file(3), X509_get_default_cert_dir_env(3) and
|
||
|
|
X509_get_default_cert_dir(3) and link to them here.
|
||
|
|
|
||
|
|
=end comment
|
||
|
|
|
||
|
|
=back
|
||
|
|
|
||
|
|
=head2 Control Commands
|
||
|
|
|
||
|
|
The B<X509_LOOKUP_METHOD>s built into OpenSSL recognise the following
|
||
|
|
X509_LOOKUP_ctrl() I<cmd>s:
|
||
|
|
|
||
|
|
=over 4
|
||
|
|
|
||
|
|
=item B<X509_L_FILE_LOAD>
|
||
|
|
|
||
|
|
This is the command that X509_LOOKUP_load_file() uses.
|
||
|
|
The filename is passed in I<argc>, and the type in I<argl>.
|
||
|
|
|
||
|
|
=item B<X509_L_ADD_DIR>
|
||
|
|
|
||
|
|
This is the command that X509_LOOKUP_add_dir() uses.
|
||
|
|
The directory specification is passed in I<argc>, and the type in
|
||
|
|
I<argl>.
|
||
|
|
|
||
|
|
=item B<X509_L_ADD_STORE>
|
||
|
|
|
||
|
|
This is the command that X509_LOOKUP_add_store() uses.
|
||
|
|
The URI is passed in I<argc>.
|
||
|
|
|
||
|
|
=item B<X509_L_LOAD_STORE>
|
||
|
|
|
||
|
|
This is the command that X509_LOOKUP_load_store() uses.
|
||
|
|
The URI is passed in I<argc>.
|
||
|
|
|
||
|
|
=back
|
||
|
|
|
||
|
|
=head1 RETURN VALUES
|
||
|
|
|
||
|
|
X509_LOOKUP_new() returns an B<X509_LOOKUP> pointer when successful,
|
||
|
|
or NULL on error.
|
||
|
|
|
||
|
|
X509_LOOKUP_init() and X509_LOOKUP_shutdown() return 1 on success, or
|
||
|
|
0 on error.
|
||
|
|
|
||
|
|
X509_LOOKUP_ctrl() returns -1 if the B<X509_LOOKUP> doesn't have an
|
||
|
|
associated B<X509_LOOKUP_METHOD>, or 1 if the X<509_LOOKUP_METHOD>
|
||
|
|
doesn't have a control function.
|
||
|
|
Otherwise, it returns what the control function in the
|
||
|
|
B<X509_LOOKUP_METHOD> returns, which is usually 1 on success and 0 in
|
||
|
|
error.
|
||
|
|
|
||
|
|
X509_LOOKUP_get_store() returns an B<X509_STORE> pointer if there is
|
||
|
|
one, otherwise NULL.
|
||
|
|
|
||
|
|
X509_LOOKUP_by_subject(), X509_LOOKUP_by_issuer_serial(),
|
||
|
|
X509_LOOKUP_by_fingerprint(), and X509_LOOKUP_by_alias() all return 0
|
||
|
|
if there is no B<X509_LOOKUP_METHOD> or that method doesn't implement
|
||
|
|
the corresponding function.
|
||
|
|
Otherwise, it returns what the corresponding function in the
|
||
|
|
B<X509_LOOKUP_METHOD> returns, which is usually 1 on success and 0 in
|
||
|
|
error.
|
||
|
|
|
||
|
|
=head1 SEE ALSO
|
||
|
|
|
||
|
|
L<X509_LOOKUP_METHOD(3)>, L<X509_STORE(3)>
|
||
|
|
|
||
|
|
=head1 COPYRIGHT
|
||
|
|
|
||
|
|
Copyright 2020 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
|