1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
7 typedef struct DnsQueryCandidate DnsQueryCandidate
;
8 typedef struct DnsScope DnsScope
;
10 #include "resolved-dns-cache.h"
11 #include "resolved-dns-dnssec.h"
12 #include "resolved-dns-packet.h"
13 #include "resolved-dns-query.h"
14 #include "resolved-dns-search-domain.h"
15 #include "resolved-dns-server.h"
16 #include "resolved-dns-stream.h"
17 #include "resolved-dns-zone.h"
19 typedef enum DnsScopeMatch
{
22 DNS_SCOPE_YES_BASE
, /* Add the number of matching labels to this */
23 DNS_SCOPE_YES_END
= DNS_SCOPE_YES_BASE
+ DNS_N_LABELS_MAX
,
25 _DNS_SCOPE_MATCH_INVALID
= -EINVAL
,
34 /* Copied at scope creation time from the link/manager */
35 DnssecMode dnssec_mode
;
36 DnsOverTlsMode dns_over_tls_mode
;
43 OrderedHashmap
*conflict_queue
;
44 sd_event_source
*conflict_event_source
;
46 sd_event_source
*announce_event_source
;
48 sd_event_source
*mdns_goodbye_event_source
;
52 usec_t resend_timeout
;
55 LIST_HEAD(DnsQueryCandidate
, query_candidates
);
57 /* Note that we keep track of ongoing transactions in two ways: once in a hashmap, indexed by the rr
58 * key, and once in a linked list. We use the hashmap to quickly find transactions we can reuse for a
59 * key. But note that there might be multiple transactions for the same key (because the associated
60 * query flags might differ in incompatible ways: e.g. we may not reuse a non-validating transaction
61 * as validating. Hence we maintain a per-key list of transactions, which we iterate through to find
62 * one we can reuse with matching flags. */
63 Hashmap
*transactions_by_key
;
64 LIST_HEAD(DnsTransaction
, transactions
);
66 LIST_FIELDS(DnsScope
, scopes
);
71 int dns_scope_new(Manager
*m
, DnsScope
**ret
, Link
*l
, DnsProtocol p
, int family
);
72 DnsScope
* dns_scope_free(DnsScope
*s
);
74 void dns_scope_packet_received(DnsScope
*s
, usec_t rtt
);
75 void dns_scope_packet_lost(DnsScope
*s
, usec_t usec
);
77 int dns_scope_emit_udp(DnsScope
*s
, int fd
, int af
, DnsPacket
*p
);
78 int dns_scope_socket_tcp(DnsScope
*s
, int family
, const union in_addr_union
*address
, DnsServer
*server
, uint16_t port
, union sockaddr_union
*ret_socket_address
);
79 int dns_scope_socket_udp(DnsScope
*s
, DnsServer
*server
);
81 DnsScopeMatch
dns_scope_good_domain(DnsScope
*s
, DnsQuery
*q
, uint64_t query_flags
);
82 bool dns_scope_good_key(DnsScope
*s
, const DnsResourceKey
*key
);
84 DnsServer
*dns_scope_get_dns_server(DnsScope
*s
);
85 unsigned dns_scope_get_n_dns_servers(DnsScope
*s
);
86 void dns_scope_next_dns_server(DnsScope
*s
, DnsServer
*if_current
);
88 int dns_scope_llmnr_membership(DnsScope
*s
, bool b
);
89 int dns_scope_mdns_membership(DnsScope
*s
, bool b
);
91 int dns_scope_make_reply_packet(DnsScope
*s
, uint16_t id
, int rcode
, DnsQuestion
*q
, DnsAnswer
*answer
, DnsAnswer
*soa
, bool tentative
, DnsPacket
**ret
);
92 void dns_scope_process_query(DnsScope
*s
, DnsStream
*stream
, DnsPacket
*p
);
94 DnsTransaction
*dns_scope_find_transaction(DnsScope
*scope
, DnsResourceKey
*key
, uint64_t query_flags
);
96 int dns_scope_notify_conflict(DnsScope
*scope
, DnsResourceRecord
*rr
);
97 void dns_scope_check_conflicts(DnsScope
*scope
, DnsPacket
*p
);
99 void dns_scope_dump(DnsScope
*s
, FILE *f
);
101 DnsSearchDomain
*dns_scope_get_search_domains(DnsScope
*s
);
103 bool dns_scope_name_wants_search_domain(DnsScope
*s
, const char *name
);
105 bool dns_scope_network_good(DnsScope
*s
);
107 int dns_scope_ifindex(DnsScope
*s
);
109 int dns_scope_announce(DnsScope
*scope
, bool goodbye
);
111 int dns_scope_add_dnssd_services(DnsScope
*scope
);
112 int dns_scope_remove_dnssd_services(DnsScope
*scope
);
114 bool dns_scope_is_default_route(DnsScope
*scope
);
116 int dns_scope_dump_cache_to_json(DnsScope
*scope
, JsonVariant
**ret
);
118 int dns_type_suitable_for_protocol(uint16_t type
, DnsProtocol protocol
);
119 int dns_question_types_suitable_for_protocol(DnsQuestion
*q
, DnsProtocol protocol
);