[thirdparty/systemd.git] / src / resolve / resolved-dns-zone.h

/*-*- 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, DnsQuestion *q, 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);
Commit	Line	Data
	1	/-- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil --/
	2
	3	#pragma once
	4
	5	/***
	6	This file is part of systemd.
	7
	8	Copyright 2014 Lennart Poettering
	9
	10	systemd is free software; you can redistribute it and/or modify it
	11	under the terms of the GNU Lesser General Public License as published by
	12	the Free Software Foundation; either version 2.1 of the License, or
	13	(at your option) any later version.
	14
	15	systemd is distributed in the hope that it will be useful, but
	16	WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	18	Lesser General Public License for more details.
	19
	20	You should have received a copy of the GNU Lesser General Public License
	21	along with systemd; If not, see <http://www.gnu.org/licenses/>.
	22	***/
	23
	24	#include "hashmap.h"
	25
	26	typedef struct DnsZone {
	27	Hashmap *by_key;
	28	Hashmap *by_name;
	29	} DnsZone;
	30
	31	typedef struct DnsZoneItem DnsZoneItem;
	32	typedef enum DnsZoneItemState DnsZoneItemState;
	33
	34	#include "resolved-dns-rr.h"
	35	#include "resolved-dns-question.h"
	36	#include "resolved-dns-answer.h"
	37	#include "resolved-dns-transaction.h"
	38
	39	/* RFC 4795 Section 2.8. suggests a TTL of 30s by default */
	40	#define LLMNR_DEFAULT_TTL (30)
	41
	42	enum DnsZoneItemState {
	43	DNS_ZONE_ITEM_PROBING,
	44	DNS_ZONE_ITEM_ESTABLISHED,
	45	DNS_ZONE_ITEM_VERIFYING,
	46	DNS_ZONE_ITEM_WITHDRAWN,
	47	};
	48
	49	struct DnsZoneItem {
	50	DnsScope *scope;
	51	DnsResourceRecord *rr;
	52
	53	DnsZoneItemState state;
	54
	55	unsigned block_ready;
	56
	57	bool probing_enabled;
	58
	59	LIST_FIELDS(DnsZoneItem, by_key);
	60	LIST_FIELDS(DnsZoneItem, by_name);
	61
	62	DnsTransaction *probe_transaction;
	63	};
	64
	65	void dns_zone_flush(DnsZone *z);
	66
	67	int dns_zone_put(DnsZone z, DnsScope s, DnsResourceRecord *rr, bool probe);
	68	void dns_zone_remove_rr(DnsZone z, DnsResourceRecord rr);
	69
	70	int dns_zone_lookup(DnsZone z, DnsQuestion q, DnsAnswer answer, DnsAnswer soa, bool *tentative);
	71
	72	void dns_zone_item_conflict(DnsZoneItem *i);
	73	void dns_zone_item_ready(DnsZoneItem *i);
	74
	75	int dns_zone_check_conflicts(DnsZone zone, DnsResourceRecord rr);
	76	int dns_zone_verify_conflicts(DnsZone zone, DnsResourceKey key);
	77
	78	void dns_zone_verify_all(DnsZone *zone);
	79
	80	void dns_zone_item_probe_stop(DnsZoneItem *i);
	81
	82	void dns_zone_dump(DnsZone zone, FILE f);
	83	bool dns_zone_is_empty(DnsZone *zone);