85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "hashmap.h"
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typedef struct DnsZone {
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Hashmap *by_key;
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Hashmap *by_name;
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} DnsZone;
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typedef struct DnsZoneItem DnsZoneItem;
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typedef enum DnsZoneItemState DnsZoneItemState;
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#include "resolved-dns-answer.h"
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#include "resolved-dns-question.h"
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#include "resolved-dns-rr.h"
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#include "resolved-dns-transaction.h"
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/* RFC 4795 Section 2.8. suggests a TTL of 30s by default */
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#define LLMNR_DEFAULT_TTL (30)
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/* RFC 6762 Section 10. suggests a TTL of 120s by default */
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#define MDNS_DEFAULT_TTL (120)
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enum DnsZoneItemState {
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DNS_ZONE_ITEM_PROBING,
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DNS_ZONE_ITEM_ESTABLISHED,
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DNS_ZONE_ITEM_VERIFYING,
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DNS_ZONE_ITEM_WITHDRAWN,
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};
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struct DnsZoneItem {
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DnsScope *scope;
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DnsResourceRecord *rr;
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DnsZoneItemState state;
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unsigned block_ready;
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bool probing_enabled;
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LIST_FIELDS(DnsZoneItem, by_key);
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LIST_FIELDS(DnsZoneItem, by_name);
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DnsTransaction *probe_transaction;
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};
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void dns_zone_flush(DnsZone *z);
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int dns_zone_put(DnsZone *z, DnsScope *s, DnsResourceRecord *rr, bool probe);
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void dns_zone_remove_rr(DnsZone *z, DnsResourceRecord *rr);
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int dns_zone_lookup(DnsZone *z, DnsResourceKey *key, int ifindex, DnsAnswer **answer, DnsAnswer **soa, bool *tentative);
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void dns_zone_item_conflict(DnsZoneItem *i);
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void dns_zone_item_notify(DnsZoneItem *i);
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int dns_zone_check_conflicts(DnsZone *zone, DnsResourceRecord *rr);
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int dns_zone_verify_conflicts(DnsZone *zone, DnsResourceKey *key);
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void dns_zone_verify_all(DnsZone *zone);
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void dns_zone_item_probe_stop(DnsZoneItem *i);
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void dns_zone_dump(DnsZone *zone, FILE *f);
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bool dns_zone_is_empty(DnsZone *zone);
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