121 lines
3.9 KiB
C
121 lines
3.9 KiB
C
#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 "list.h"
|
|
|
|
typedef struct DnsScope DnsScope;
|
|
|
|
#include "resolved-dns-cache.h"
|
|
#include "resolved-dns-dnssec.h"
|
|
#include "resolved-dns-packet.h"
|
|
#include "resolved-dns-query.h"
|
|
#include "resolved-dns-search-domain.h"
|
|
#include "resolved-dns-server.h"
|
|
#include "resolved-dns-stream.h"
|
|
#include "resolved-dns-zone.h"
|
|
#include "resolved-link.h"
|
|
|
|
typedef enum DnsScopeMatch {
|
|
DNS_SCOPE_NO,
|
|
DNS_SCOPE_MAYBE,
|
|
DNS_SCOPE_YES,
|
|
_DNS_SCOPE_MATCH_MAX,
|
|
_DNS_SCOPE_INVALID = -1
|
|
} DnsScopeMatch;
|
|
|
|
struct DnsScope {
|
|
Manager *manager;
|
|
|
|
DnsProtocol protocol;
|
|
int family;
|
|
DnssecMode dnssec_mode;
|
|
|
|
Link *link;
|
|
|
|
DnsCache cache;
|
|
DnsZone zone;
|
|
|
|
OrderedHashmap *conflict_queue;
|
|
sd_event_source *conflict_event_source;
|
|
|
|
bool announced:1;
|
|
sd_event_source *announce_event_source;
|
|
|
|
RateLimit ratelimit;
|
|
|
|
usec_t resend_timeout;
|
|
usec_t max_rtt;
|
|
|
|
LIST_HEAD(DnsQueryCandidate, query_candidates);
|
|
|
|
/* Note that we keep track of ongoing transactions in two
|
|
* ways: once in a hashmap, indexed by the rr key, and once in
|
|
* a linked list. We use the hashmap to quickly find
|
|
* transactions we can reuse for a key. But note that there
|
|
* might be multiple transactions for the same key (because
|
|
* the zone probing can't reuse a transaction answered from
|
|
* the zone or the cache), and the hashmap only tracks the
|
|
* most recent entry. */
|
|
Hashmap *transactions_by_key;
|
|
LIST_HEAD(DnsTransaction, transactions);
|
|
|
|
LIST_FIELDS(DnsScope, scopes);
|
|
};
|
|
|
|
int dns_scope_new(Manager *m, DnsScope **ret, Link *l, DnsProtocol p, int family);
|
|
DnsScope* dns_scope_free(DnsScope *s);
|
|
|
|
void dns_scope_packet_received(DnsScope *s, usec_t rtt);
|
|
void dns_scope_packet_lost(DnsScope *s, usec_t usec);
|
|
|
|
int dns_scope_emit_udp(DnsScope *s, int fd, DnsPacket *p);
|
|
int dns_scope_socket_tcp(DnsScope *s, int family, const union in_addr_union *address, DnsServer *server, uint16_t port);
|
|
int dns_scope_socket_udp(DnsScope *s, DnsServer *server, uint16_t port);
|
|
|
|
DnsScopeMatch dns_scope_good_domain(DnsScope *s, int ifindex, uint64_t flags, const char *domain);
|
|
bool dns_scope_good_key(DnsScope *s, const DnsResourceKey *key);
|
|
|
|
DnsServer *dns_scope_get_dns_server(DnsScope *s);
|
|
void dns_scope_next_dns_server(DnsScope *s);
|
|
|
|
int dns_scope_llmnr_membership(DnsScope *s, bool b);
|
|
int dns_scope_mdns_membership(DnsScope *s, bool b);
|
|
|
|
int dns_scope_make_reply_packet(DnsScope *s, uint16_t id, int rcode, DnsQuestion *q, DnsAnswer *answer, DnsAnswer *soa, bool tentative, DnsPacket **ret);
|
|
void dns_scope_process_query(DnsScope *s, DnsStream *stream, DnsPacket *p);
|
|
|
|
DnsTransaction *dns_scope_find_transaction(DnsScope *scope, DnsResourceKey *key, bool cache_ok);
|
|
|
|
int dns_scope_notify_conflict(DnsScope *scope, DnsResourceRecord *rr);
|
|
void dns_scope_check_conflicts(DnsScope *scope, DnsPacket *p);
|
|
|
|
void dns_scope_dump(DnsScope *s, FILE *f);
|
|
|
|
DnsSearchDomain *dns_scope_get_search_domains(DnsScope *s);
|
|
|
|
bool dns_scope_name_needs_search_domain(DnsScope *s, const char *name);
|
|
|
|
bool dns_scope_network_good(DnsScope *s);
|
|
|
|
int dns_scope_ifindex(DnsScope *s);
|
|
|
|
void dns_scope_announce(DnsScope *scope);
|