mirror of https://github.com/openssl/openssl.git
197 lines
8.8 KiB
Plaintext
197 lines
8.8 KiB
Plaintext
=pod
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=head1 NAME
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X509_LOOKUP_METHOD,
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X509_LOOKUP_meth_new, X509_LOOKUP_meth_free, X509_LOOKUP_meth_set_new_item,
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X509_LOOKUP_meth_get_new_item, X509_LOOKUP_meth_set_free,
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X509_LOOKUP_meth_get_free, X509_LOOKUP_meth_set_init,
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X509_LOOKUP_meth_get_init, X509_LOOKUP_meth_set_shutdown,
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X509_LOOKUP_meth_get_shutdown,
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X509_LOOKUP_ctrl_fn, X509_LOOKUP_meth_set_ctrl, X509_LOOKUP_meth_get_ctrl,
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X509_LOOKUP_get_by_subject_fn, X509_LOOKUP_meth_set_get_by_subject,
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X509_LOOKUP_meth_get_get_by_subject,
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X509_LOOKUP_get_by_issuer_serial_fn, X509_LOOKUP_meth_set_get_by_issuer_serial,
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X509_LOOKUP_meth_get_get_by_issuer_serial,
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X509_LOOKUP_get_by_fingerprint_fn, X509_LOOKUP_meth_set_get_by_fingerprint,
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X509_LOOKUP_meth_get_get_by_fingerprint,
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X509_LOOKUP_get_by_alias_fn, X509_LOOKUP_meth_set_get_by_alias,
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X509_LOOKUP_meth_get_get_by_alias,
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X509_OBJECT_set1_X509, X509_OBJECT_set1_X509_CRL
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- Routines to build up X509_LOOKUP methods
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=head1 SYNOPSIS
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#include <openssl/x509_vfy.h>
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typedef x509_lookup_method_st X509_LOOKUP_METHOD;
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X509_LOOKUP_METHOD *X509_LOOKUP_meth_new(const char *name);
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void X509_LOOKUP_meth_free(X509_LOOKUP_METHOD *method);
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int X509_LOOKUP_meth_set_new_item(X509_LOOKUP_METHOD *method,
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int (*new_item) (X509_LOOKUP *ctx));
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int (*X509_LOOKUP_meth_get_new_item(const X509_LOOKUP_METHOD* method))
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(X509_LOOKUP *ctx);
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int X509_LOOKUP_meth_set_free(X509_LOOKUP_METHOD *method,
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void (*free) (X509_LOOKUP *ctx));
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void (*X509_LOOKUP_meth_get_free(const X509_LOOKUP_METHOD* method))
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(X509_LOOKUP *ctx);
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int X509_LOOKUP_meth_set_init(X509_LOOKUP_METHOD *method,
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int (*init) (X509_LOOKUP *ctx));
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int (*X509_LOOKUP_meth_get_init(const X509_LOOKUP_METHOD* method))
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(X509_LOOKUP *ctx);
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int X509_LOOKUP_meth_set_shutdown(X509_LOOKUP_METHOD *method,
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int (*shutdown) (X509_LOOKUP *ctx));
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int (*X509_LOOKUP_meth_get_shutdown(const X509_LOOKUP_METHOD* method))
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(X509_LOOKUP *ctx);
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typedef int (*X509_LOOKUP_ctrl_fn)(X509_LOOKUP *ctx, int cmd, const char *argc,
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long argl, char **ret);
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int X509_LOOKUP_meth_set_ctrl(X509_LOOKUP_METHOD *method,
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X509_LOOKUP_ctrl_fn ctrl_fn);
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X509_LOOKUP_ctrl_fn X509_LOOKUP_meth_get_ctrl(const X509_LOOKUP_METHOD *method);
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typedef int (*X509_LOOKUP_get_by_subject_fn)(X509_LOOKUP *ctx,
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X509_LOOKUP_TYPE type,
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const X509_NAME *name,
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X509_OBJECT *ret);
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int X509_LOOKUP_meth_set_get_by_subject(X509_LOOKUP_METHOD *method,
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X509_LOOKUP_get_by_subject_fn fn);
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X509_LOOKUP_get_by_subject_fn X509_LOOKUP_meth_get_get_by_subject(
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const X509_LOOKUP_METHOD *method);
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typedef int (*X509_LOOKUP_get_by_issuer_serial_fn)(X509_LOOKUP *ctx,
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X509_LOOKUP_TYPE type,
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const X509_NAME *name,
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const ASN1_INTEGER *serial,
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X509_OBJECT *ret);
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int X509_LOOKUP_meth_set_get_by_issuer_serial(
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X509_LOOKUP_METHOD *method, X509_LOOKUP_get_by_issuer_serial_fn fn);
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X509_LOOKUP_get_by_issuer_serial_fn X509_LOOKUP_meth_get_get_by_issuer_serial(
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const X509_LOOKUP_METHOD *method);
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typedef int (*X509_LOOKUP_get_by_fingerprint_fn)(X509_LOOKUP *ctx,
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X509_LOOKUP_TYPE type,
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const unsigned char* bytes,
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int len,
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X509_OBJECT *ret);
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int X509_LOOKUP_meth_set_get_by_fingerprint(X509_LOOKUP_METHOD *method,
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X509_LOOKUP_get_by_fingerprint_fn fn);
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X509_LOOKUP_get_by_fingerprint_fn X509_LOOKUP_meth_get_get_by_fingerprint(
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const X509_LOOKUP_METHOD *method);
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typedef int (*X509_LOOKUP_get_by_alias_fn)(X509_LOOKUP *ctx,
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X509_LOOKUP_TYPE type,
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const char *str,
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int len,
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X509_OBJECT *ret);
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int X509_LOOKUP_meth_set_get_by_alias(X509_LOOKUP_METHOD *method,
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X509_LOOKUP_get_by_alias_fn fn);
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X509_LOOKUP_get_by_alias_fn X509_LOOKUP_meth_get_get_by_alias(
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const X509_LOOKUP_METHOD *method);
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int X509_OBJECT_set1_X509(X509_OBJECT *a, X509 *obj);
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int X509_OBJECT_set1_X509_CRL(X509_OBJECT *a, X509_CRL *obj);
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=head1 DESCRIPTION
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The B<X509_LOOKUP_METHOD> type is a structure used for the implementation of new
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X509_LOOKUP types. It provides a set of functions used by OpenSSL for the
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implementation of various X509 and X509_CRL lookup capabilities. One instance
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of an X509_LOOKUP_METHOD can be associated to many instantiations of an
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B<X509_LOOKUP> structure.
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X509_LOOKUP_meth_new() creates a new B<X509_LOOKUP_METHOD> structure. It should
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be given a human-readable string containing a brief description of the lookup
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method.
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X509_LOOKUP_meth_free() destroys a B<X509_LOOKUP_METHOD> structure.
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X509_LOOKUP_get_new_item() and X509_LOOKUP_set_new_item() get and set the
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function that is called when an B<X509_LOOKUP> object is created with
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X509_LOOKUP_new(). If an X509_LOOKUP_METHOD requires any per-X509_LOOKUP
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specific data, the supplied new_item function should allocate this data and
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invoke L<X509_LOOKUP_set_method_data(3)>.
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X509_LOOKUP_get_free() and X509_LOOKUP_set_free() get and set the function
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that is used to free any method data that was allocated and set from within
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new_item function.
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X509_LOOKUP_meth_get_init() and X509_LOOKUP_meth_set_init() get and set the
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function that is used to initialize the method data that was set with
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L<X509_LOOKUP_set_method_data(3)> as part of the new_item routine.
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X509_LOOKUP_meth_get_shutdown() and X509_LOOKUP_meth_set_shutdown() get and set
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the function that is used to shut down the method data whose state was
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previously initialized in the init function.
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X509_LOOKUP_meth_get_ctrl() and X509_LOOKUP_meth_set_ctrl() get and set a
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function to be used to handle arbitrary control commands issued by
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X509_LOOKUP_ctrl(). The control function is given the X509_LOOKUP
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B<ctx>, along with the arguments passed by X509_LOOKUP_ctrl. B<cmd> is
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an arbitrary integer that defines some operation. B<argc> is a pointer
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to an array of characters. B<argl> is an integer. B<ret>, if set,
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points to a location where any return data should be written to. How
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B<argc> and B<argl> are used depends entirely on the control function.
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X509_LOOKUP_set_get_by_subject(), X509_LOOKUP_set_get_by_issuer_serial(),
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X509_LOOKUP_set_get_by_fingerprint(), X509_LOOKUP_set_get_by_alias() set
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the functions used to retrieve an X509 or X509_CRL object by the object's
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subject, issuer, fingerprint, and alias respectively. These functions are given
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the X509_LOOKUP context, the type of the X509_OBJECT being requested, parameters
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related to the lookup, and an X509_OBJECT that will receive the requested
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object.
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Implementations must add objects they find to the B<X509_STORE> object
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using X509_STORE_add_cert() or X509_STORE_add_crl(). This increments
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its reference count. However, the X509_STORE_CTX_get_by_subject()
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function also increases the reference count which leads to one too
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many references being held. Therefore, applications should
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additionally call X509_free() or X509_CRL_free() to decrement the
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reference count again.
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Implementations should also use either X509_OBJECT_set1_X509() or
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X509_OBJECT_set1_X509_CRL() to set the result. Note that this also
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increments the result's reference count.
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Any method data that was created as a result of the new_item function
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set by X509_LOOKUP_meth_set_new_item() can be accessed with
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L<X509_LOOKUP_get_method_data(3)>. The B<X509_STORE> object that owns the
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X509_LOOKUP may be accessed with L<X509_LOOKUP_get_store(3)>. Successful
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lookups should return 1, and unsuccessful lookups should return 0.
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X509_LOOKUP_get_get_by_subject(), X509_LOOKUP_get_get_by_issuer_serial(),
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X509_LOOKUP_get_get_by_fingerprint(), X509_LOOKUP_get_get_by_alias() retrieve
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the function set by the corresponding setter.
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=head1 RETURN VALUES
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The B<X509_LOOKUP_meth_set> functions return 1 on success or 0 on error.
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The B<X509_LOOKUP_meth_get> functions return the corresponding function
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pointers.
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=head1 SEE ALSO
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L<X509_STORE_new(3)>, L<SSL_CTX_set_cert_store(3)>
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=head1 HISTORY
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The functions described here were added in OpenSSL 1.1.0i.
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=head1 COPYRIGHT
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Copyright 2018-2020 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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