summaryrefslogtreecommitdiff
path: root/src/resolve/resolved-dns-scope.h
blob: 88fb8224e24c3f5ec9e6acbc3edf0a0eb8d808ba (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
/*-*- 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 "list.h"

typedef struct DnsScope DnsScope;

#include "resolved-dns-server.h"
#include "resolved-dns-packet.h"
#include "resolved-dns-cache.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;

        Link *link;

        char **domains;

        DnsCache cache;
        DnsZone zone;

        OrderedHashmap *conflict_queue;
        sd_event_source *conflict_event_source;

        RateLimit ratelimit;

        usec_t resend_timeout;
        usec_t max_rtt;

        Hashmap *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(DnsScope *s, int fd, DnsPacket *p);
int dns_scope_tcp_socket(DnsScope *s, int family, const union in_addr_union *address, uint16_t port, DnsServer **server);
int dns_scope_udp_dns_socket(DnsScope *s, DnsServer **server);

DnsScopeMatch dns_scope_good_domain(DnsScope *s, int ifindex, uint64_t flags, const char *domain);
int dns_scope_good_key(DnsScope *s, 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);

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);