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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 "list.h" | |
25 | ||
26 | typedef struct DnsScope DnsScope; | |
27 | ||
322345fd | 28 | #include "resolved-dns-cache.h" |
71d35b6b TA |
29 | #include "resolved-dns-packet.h" |
30 | #include "resolved-dns-server.h" | |
623a4c97 | 31 | #include "resolved-dns-zone.h" |
39d8db04 | 32 | #include "resolved-link.h" |
74b2466e | 33 | |
74b2466e LP |
34 | typedef enum DnsScopeMatch { |
35 | DNS_SCOPE_NO, | |
36 | DNS_SCOPE_MAYBE, | |
37 | DNS_SCOPE_YES, | |
38 | _DNS_SCOPE_MATCH_MAX, | |
39 | _DNS_SCOPE_INVALID = -1 | |
40 | } DnsScopeMatch; | |
41 | ||
42 | struct DnsScope { | |
43 | Manager *manager; | |
44 | ||
1716f6dc | 45 | DnsProtocol protocol; |
0dd25fb9 | 46 | int family; |
74b2466e LP |
47 | |
48 | Link *link; | |
49 | ||
322345fd | 50 | DnsCache cache; |
623a4c97 | 51 | DnsZone zone; |
322345fd | 52 | |
1e43061b | 53 | OrderedHashmap *conflict_queue; |
a4076574 LP |
54 | sd_event_source *conflict_event_source; |
55 | ||
aea2429d LP |
56 | RateLimit ratelimit; |
57 | ||
9df3ba6c TG |
58 | usec_t resend_timeout; |
59 | usec_t max_rtt; | |
60 | ||
801ad6a6 | 61 | LIST_HEAD(DnsQueryCandidate, query_candidates); |
74b2466e | 62 | |
f9ebb22a LP |
63 | /* Note that we keep track of ongoing transactions in two |
64 | * ways: once in a hashmap, indexed by the rr key, and once in | |
65 | * a linked list. We use the hashmap to quickly find | |
66 | * transactions we can reuse for a key. But note that there | |
67 | * might be multiple transactions for the same key (because | |
68 | * the zone probing can't reuse a transaction answered from | |
69 | * the zone or the cache), and the hashmap only tracks the | |
70 | * most recent entry. */ | |
71 | Hashmap *transactions_by_key; | |
72 | LIST_HEAD(DnsTransaction, transactions); | |
73 | ||
74b2466e LP |
74 | LIST_FIELDS(DnsScope, scopes); |
75 | }; | |
76 | ||
0dd25fb9 | 77 | int dns_scope_new(Manager *m, DnsScope **ret, Link *l, DnsProtocol p, int family); |
74b2466e LP |
78 | DnsScope* dns_scope_free(DnsScope *s); |
79 | ||
9df3ba6c TG |
80 | void dns_scope_packet_received(DnsScope *s, usec_t rtt); |
81 | void dns_scope_packet_lost(DnsScope *s, usec_t usec); | |
82 | ||
9c5e12a4 | 83 | int dns_scope_emit(DnsScope *s, int fd, DnsServer *server, DnsPacket *p); |
8300ba21 | 84 | int dns_scope_tcp_socket(DnsScope *s, int family, const union in_addr_union *address, uint16_t port, DnsServer **server); |
0db64366 | 85 | int dns_scope_udp_dns_socket(DnsScope *s, DnsServer **server); |
ad867662 | 86 | |
51323288 | 87 | DnsScopeMatch dns_scope_good_domain(DnsScope *s, int ifindex, uint64_t flags, const char *domain); |
1716f6dc | 88 | int dns_scope_good_key(DnsScope *s, DnsResourceKey *key); |
74b2466e | 89 | |
2c27fbca | 90 | DnsServer *dns_scope_get_dns_server(DnsScope *s); |
74b2466e | 91 | void dns_scope_next_dns_server(DnsScope *s); |
1716f6dc LP |
92 | |
93 | int dns_scope_llmnr_membership(DnsScope *s, bool b); | |
623a4c97 LP |
94 | |
95 | void dns_scope_process_query(DnsScope *s, DnsStream *stream, DnsPacket *p); | |
ec2c5e43 | 96 | |
f52e61da | 97 | DnsTransaction *dns_scope_find_transaction(DnsScope *scope, DnsResourceKey *key, bool cache_ok); |
a4076574 LP |
98 | |
99 | int dns_scope_notify_conflict(DnsScope *scope, DnsResourceRecord *rr); | |
100 | void dns_scope_check_conflicts(DnsScope *scope, DnsPacket *p); | |
4d506d6b LP |
101 | |
102 | void dns_scope_dump(DnsScope *s, FILE *f); | |
a51c1048 LP |
103 | |
104 | DnsSearchDomain *dns_scope_get_search_domains(DnsScope *s); | |
801ad6a6 | 105 | |
dc477e73 | 106 | bool dns_scope_name_needs_search_domain(DnsScope *s, const char *name); |