Aram Sargsyan
3aa2d84880
Add support for loading and validating the 'tls' parameter from the forwarders' configuration. This prepares ground for adding support to forward queries to DoT-enabled upstream servers.
125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
/*
|
|
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
|
|
*
|
|
* SPDX-License-Identifier: MPL-2.0
|
|
*
|
|
* 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 https://mozilla.org/MPL/2.0/.
|
|
*
|
|
* See the COPYRIGHT file distributed with this work for additional
|
|
* information regarding copyright ownership.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
/*! \file dns/forward.h */
|
|
|
|
#include <isc/lang.h>
|
|
#include <isc/result.h>
|
|
#include <isc/sockaddr.h>
|
|
|
|
#include <dns/types.h>
|
|
|
|
ISC_LANG_BEGINDECLS
|
|
|
|
struct dns_forwarder {
|
|
isc_sockaddr_t addr;
|
|
dns_name_t *tlsname;
|
|
ISC_LINK(dns_forwarder_t) link;
|
|
};
|
|
|
|
typedef ISC_LIST(struct dns_forwarder) dns_forwarderlist_t;
|
|
|
|
struct dns_forwarders {
|
|
dns_forwarderlist_t fwdrs;
|
|
dns_fwdpolicy_t fwdpolicy;
|
|
};
|
|
|
|
isc_result_t
|
|
dns_fwdtable_create(isc_mem_t *mctx, dns_fwdtable_t **fwdtablep);
|
|
/*%<
|
|
* Creates a new forwarding table.
|
|
*
|
|
* Requires:
|
|
* \li mctx is a valid memory context.
|
|
* \li fwdtablep != NULL && *fwdtablep == NULL
|
|
*
|
|
* Returns:
|
|
* \li #ISC_R_SUCCESS
|
|
* \li #ISC_R_NOMEMORY
|
|
*/
|
|
|
|
isc_result_t
|
|
dns_fwdtable_addfwd(dns_fwdtable_t *fwdtable, const dns_name_t *name,
|
|
dns_forwarderlist_t *fwdrs, dns_fwdpolicy_t policy);
|
|
isc_result_t
|
|
dns_fwdtable_add(dns_fwdtable_t *fwdtable, const dns_name_t *name,
|
|
isc_sockaddrlist_t *addrs, dns_fwdpolicy_t policy);
|
|
/*%<
|
|
* Adds an entry to the forwarding table. The entry associates
|
|
* a domain with a list of forwarders and a forwarding policy. The
|
|
* addrs/fwdrs list is copied if not empty, so the caller should free
|
|
* its copy.
|
|
*
|
|
* Requires:
|
|
* \li fwdtable is a valid forwarding table.
|
|
* \li name is a valid name
|
|
* \li addrs/fwdrs is a valid list of isc_sockaddr/dns_forwarder
|
|
* structures, which may be empty.
|
|
*
|
|
* Returns:
|
|
* \li #ISC_R_SUCCESS
|
|
* \li #ISC_R_NOMEMORY
|
|
*/
|
|
|
|
isc_result_t
|
|
dns_fwdtable_delete(dns_fwdtable_t *fwdtable, const dns_name_t *name);
|
|
/*%<
|
|
* Removes an entry for 'name' from the forwarding table. If an entry
|
|
* that exactly matches 'name' does not exist, ISC_R_NOTFOUND will be returned.
|
|
*
|
|
* Requires:
|
|
* \li fwdtable is a valid forwarding table.
|
|
* \li name is a valid name
|
|
*
|
|
* Returns:
|
|
* \li #ISC_R_SUCCESS
|
|
* \li #ISC_R_NOTFOUND
|
|
* \li #ISC_R_NOSPACE
|
|
*/
|
|
|
|
isc_result_t
|
|
dns_fwdtable_find(dns_fwdtable_t *fwdtable, const dns_name_t *name,
|
|
dns_name_t *foundname, dns_forwarders_t **forwardersp);
|
|
/*%<
|
|
* Finds a domain in the forwarding table. The closest matching parent
|
|
* domain is returned.
|
|
*
|
|
* Requires:
|
|
* \li fwdtable is a valid forwarding table.
|
|
* \li name is a valid name
|
|
* \li forwardersp != NULL && *forwardersp == NULL
|
|
* \li foundname to be NULL or a valid name with buffer.
|
|
*
|
|
* Returns:
|
|
* \li #ISC_R_SUCCESS Success
|
|
* \li #DNS_R_PARTIALMATCH Superdomain found with data
|
|
* \li #ISC_R_NOTFOUND No match
|
|
* \li #ISC_R_NOSPACE Concatenating nodes to form foundname failed
|
|
*/
|
|
|
|
void
|
|
dns_fwdtable_destroy(dns_fwdtable_t **fwdtablep);
|
|
/*%<
|
|
* Destroys a forwarding table.
|
|
*
|
|
* Requires:
|
|
* \li fwtablep != NULL && *fwtablep != NULL
|
|
*
|
|
* Ensures:
|
|
* \li all memory associated with the forwarding table is freed.
|
|
*/
|
|
|
|
ISC_LANG_ENDDECLS
|