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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#ifndef DNS_CLIENTINFO_H
#define DNS_CLIENTINFO_H 1
/*****
***** Module Info
*****/
/*! \file dns/clientinfo.h
* \brief
* The DNS clientinfo interface allows libdns to retrieve information
* about the client from the caller.
*
* The clientinfo interface is used by the DNS DB and DLZ interfaces;
* it allows databases to modify their answers on the basis of information
* about the client, such as source IP address.
*
* dns_clientinfo_t contains a pointer to an opaque structure containing
* client information in some form. dns_clientinfomethods_t contains a
* list of methods which operate on that opaque structure to return
* potentially useful data. Both structures also contain versioning
* information.
*/
/*****
***** Imports
*****/
#include <isc/sockaddr.h>
#include <isc/types.h>
ISC_LANG_BEGINDECLS
/*****
***** Types
*****/
#define DNS_CLIENTINFO_VERSION 2
typedef struct dns_clientinfo {
isc_uint16_t version;
void *data;
void *dbversion;
} dns_clientinfo_t;
typedef isc_result_t (*dns_clientinfo_sourceip_t)(dns_clientinfo_t *client,
isc_sockaddr_t **addrp);
#define DNS_CLIENTINFOMETHODS_VERSION 1
#define DNS_CLIENTINFOMETHODS_AGE 0
typedef struct dns_clientinfomethods {
isc_uint16_t version;
isc_uint16_t age;
dns_clientinfo_sourceip_t sourceip;
} dns_clientinfomethods_t;
/*****
***** Methods
*****/
void
dns_clientinfomethods_init(dns_clientinfomethods_t *methods,
dns_clientinfo_sourceip_t sourceip);
void
dns_clientinfo_init(dns_clientinfo_t *ci, void *data, void *versionp);
ISC_LANG_ENDDECLS
#endif /* DNS_CLIENTINFO_H */