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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
#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 "basic-dns/resolved-dns-dnssec.h"
#include "basic-dns/resolved-dns-packet.h"
#include "systemd-basic/list.h"
typedef struct DnsScope DnsScope;
#include "resolved-dns-cache.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"
#include "resolved-manager.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;
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);
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);
|
