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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
#pragma once
/***
This file is part of systemd.
Copyright 2014 Tom Gundersen <teg@jklm.no>
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 <systemd/sd-event.h>
#include "systemd-basic/hashmap.h"
#include "systemd-basic/list.h"
#include "systemd-basic/ordered-set.h"
#include "systemd-shared/resolve-util.h"
#include "systemd-staging/sd-netlink.h"
#include "systemd-staging/sd-network.h"
typedef struct Manager Manager;
#include "resolved-conf.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-trust-anchor.h"
#include "resolved-link.h"
#define MANAGER_SEARCH_DOMAINS_MAX 32
#define MANAGER_DNS_SERVERS_MAX 32
struct Manager {
sd_event *event;
ResolveSupport llmnr_support;
ResolveSupport mdns_support;
DnssecMode dnssec_mode;
bool enable_cache;
DnsStubListenerMode dns_stub_listener_mode;
/* Network */
Hashmap *links;
sd_netlink *rtnl;
sd_event_source *rtnl_event_source;
sd_network_monitor *network_monitor;
sd_event_source *network_event_source;
/* DNS query management */
Hashmap *dns_transactions;
LIST_HEAD(DnsQuery, dns_queries);
unsigned n_dns_queries;
LIST_HEAD(DnsStream, dns_streams);
unsigned n_dns_streams;
/* Unicast dns */
LIST_HEAD(DnsServer, dns_servers);
LIST_HEAD(DnsServer, fallback_dns_servers);
unsigned n_dns_servers; /* counts both main and fallback */
DnsServer *current_dns_server;
LIST_HEAD(DnsSearchDomain, search_domains);
unsigned n_search_domains;
bool need_builtin_fallbacks:1;
bool read_resolv_conf:1;
usec_t resolv_conf_mtime;
DnsTrustAnchor trust_anchor;
LIST_HEAD(DnsScope, dns_scopes);
DnsScope *unicast_scope;
/* LLMNR */
int llmnr_ipv4_udp_fd;
int llmnr_ipv6_udp_fd;
int llmnr_ipv4_tcp_fd;
int llmnr_ipv6_tcp_fd;
sd_event_source *llmnr_ipv4_udp_event_source;
sd_event_source *llmnr_ipv6_udp_event_source;
sd_event_source *llmnr_ipv4_tcp_event_source;
sd_event_source *llmnr_ipv6_tcp_event_source;
/* mDNS */
int mdns_ipv4_fd;
int mdns_ipv6_fd;
sd_event_source *mdns_ipv4_event_source;
sd_event_source *mdns_ipv6_event_source;
/* dbus */
sd_bus *bus;
sd_event_source *bus_retry_event_source;
/* The hostname we publish on LLMNR and mDNS */
char *llmnr_hostname;
char *mdns_hostname;
DnsResourceKey *llmnr_host_ipv4_key;
DnsResourceKey *llmnr_host_ipv6_key;
/* Watch the system hostname */
int hostname_fd;
sd_event_source *hostname_event_source;
/* Watch for system suspends */
sd_bus_slot *prepare_for_sleep_slot;
sd_event_source *sigusr1_event_source;
sd_event_source *sigusr2_event_source;
unsigned n_transactions_total;
unsigned n_dnssec_verdict[_DNSSEC_VERDICT_MAX];
/* Data from /etc/hosts */
Set* etc_hosts_by_address;
Hashmap* etc_hosts_by_name;
usec_t etc_hosts_last, etc_hosts_mtime;
/* Local DNS stub on 127.0.0.53:53 */
int dns_stub_udp_fd;
int dns_stub_tcp_fd;
sd_event_source *dns_stub_udp_event_source;
sd_event_source *dns_stub_tcp_event_source;
};
/* Manager */
int manager_new(Manager **ret);
Manager* manager_free(Manager *m);
int manager_start(Manager *m);
uint32_t manager_find_mtu(Manager *m);
int manager_write(Manager *m, int fd, DnsPacket *p);
int manager_send(Manager *m, int fd, int ifindex, int family, const union in_addr_union *destination, uint16_t port, const union in_addr_union *source, DnsPacket *p);
int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret);
int manager_find_ifindex(Manager *m, int family, const union in_addr_union *in_addr);
LinkAddress* manager_find_link_address(Manager *m, int family, const union in_addr_union *in_addr);
void manager_refresh_rrs(Manager *m);
int manager_next_hostname(Manager *m);
bool manager_our_packet(Manager *m, DnsPacket *p);
DnsScope* manager_find_scope(Manager *m, DnsPacket *p);
void manager_verify_all(Manager *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
#define EXTRA_CMSG_SPACE 1024
int manager_is_own_hostname(Manager *m, const char *name);
int manager_compile_dns_servers(Manager *m, OrderedSet **servers);
int manager_compile_search_domains(Manager *m, OrderedSet **domains, int filter_route);
DnssecMode manager_get_dnssec_mode(Manager *m);
bool manager_dnssec_supported(Manager *m);
void manager_dnssec_verdict(Manager *m, DnssecVerdict verdict, const DnsResourceKey *key);
bool manager_routable(Manager *m, int family);
void manager_flush_caches(Manager *m);
void manager_cleanup_saved_user(Manager *m);
|
