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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#pragma once
/***
This file is part of systemd.
Copyright 2014 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "hashmap.h"
typedef struct DnsZone {
Hashmap *by_key;
Hashmap *by_name;
} DnsZone;
typedef struct DnsZoneItem DnsZoneItem;
typedef enum DnsZoneItemState DnsZoneItemState;
#include "resolved-dns-rr.h"
#include "resolved-dns-question.h"
#include "resolved-dns-answer.h"
#include "resolved-dns-transaction.h"
/* RFC 4795 Section 2.8. suggests a TTL of 30s by default */
#define LLMNR_DEFAULT_TTL (30)
enum DnsZoneItemState {
DNS_ZONE_ITEM_PROBING,
DNS_ZONE_ITEM_ESTABLISHED,
DNS_ZONE_ITEM_VERIFYING,
DNS_ZONE_ITEM_WITHDRAWN,
};
struct DnsZoneItem {
DnsScope *scope;
DnsResourceRecord *rr;
DnsZoneItemState state;
unsigned block_ready;
bool probing_enabled;
LIST_FIELDS(DnsZoneItem, by_key);
LIST_FIELDS(DnsZoneItem, by_name);
DnsTransaction *probe_transaction;
};
void dns_zone_flush(DnsZone *z);
int dns_zone_put(DnsZone *z, DnsScope *s, DnsResourceRecord *rr, bool probe);
void dns_zone_remove_rr(DnsZone *z, DnsResourceRecord *rr);
int dns_zone_lookup(DnsZone *z, DnsResourceKey *key, DnsAnswer **answer, DnsAnswer **soa, bool *tentative);
void dns_zone_item_conflict(DnsZoneItem *i);
void dns_zone_item_ready(DnsZoneItem *i);
int dns_zone_check_conflicts(DnsZone *zone, DnsResourceRecord *rr);
int dns_zone_verify_conflicts(DnsZone *zone, DnsResourceKey *key);
void dns_zone_verify_all(DnsZone *zone);
void dns_zone_item_probe_stop(DnsZoneItem *i);
void dns_zone_dump(DnsZone *zone, FILE *f);
bool dns_zone_is_empty(DnsZone *zone);
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