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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 Tom Gundersen <teg@jklm.no> | |
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 "sd-event.h" | |
25 | #include "sd-network.h" | |
26 | #include "sd-rtnl.h" | |
27 | #include "util.h" | |
28 | #include "list.h" | |
29 | #include "in-addr-util.h" | |
30 | #include "hashmap.h" | |
31 | ||
32 | typedef struct Manager Manager; | |
33 | typedef enum Support Support; | |
34 | ||
35 | enum Support { | |
36 | SUPPORT_NO, | |
37 | SUPPORT_YES, | |
38 | SUPPORT_RESOLVE, | |
39 | _SUPPORT_MAX, | |
40 | _SUPPORT_INVALID = -1 | |
41 | }; | |
42 | ||
43 | #include "resolved-dns-query.h" | |
44 | #include "resolved-dns-server.h" | |
45 | #include "resolved-dns-scope.h" | |
46 | #include "resolved-dns-stream.h" | |
47 | #include "resolved-link.h" | |
48 | ||
49 | struct Manager { | |
50 | sd_event *event; | |
51 | ||
52 | Support llmnr_support; | |
53 | ||
54 | /* Network */ | |
55 | Hashmap *links; | |
56 | ||
57 | sd_rtnl *rtnl; | |
58 | sd_event_source *rtnl_event_source; | |
59 | ||
60 | sd_network_monitor *network_monitor; | |
61 | sd_event_source *network_event_source; | |
62 | ||
63 | /* DNS query management */ | |
64 | Hashmap *dns_transactions; | |
65 | LIST_HEAD(DnsQuery, dns_queries); | |
66 | unsigned n_dns_queries; | |
67 | ||
68 | LIST_HEAD(DnsStream, dns_streams); | |
69 | unsigned n_dns_streams; | |
70 | ||
71 | /* Unicast dns */ | |
72 | int dns_ipv4_fd; | |
73 | int dns_ipv6_fd; | |
74 | ||
75 | sd_event_source *dns_ipv4_event_source; | |
76 | sd_event_source *dns_ipv6_event_source; | |
77 | ||
78 | LIST_HEAD(DnsServer, dns_servers); | |
79 | LIST_HEAD(DnsServer, fallback_dns_servers); | |
80 | DnsServer *current_dns_server; | |
81 | ||
82 | bool read_resolv_conf; | |
83 | usec_t resolv_conf_mtime; | |
84 | ||
85 | LIST_HEAD(DnsScope, dns_scopes); | |
86 | DnsScope *unicast_scope; | |
87 | ||
88 | /* LLMNR */ | |
89 | int llmnr_ipv4_udp_fd; | |
90 | int llmnr_ipv6_udp_fd; | |
91 | int llmnr_ipv4_tcp_fd; | |
92 | int llmnr_ipv6_tcp_fd; | |
93 | ||
94 | sd_event_source *llmnr_ipv4_udp_event_source; | |
95 | sd_event_source *llmnr_ipv6_udp_event_source; | |
96 | sd_event_source *llmnr_ipv4_tcp_event_source; | |
97 | sd_event_source *llmnr_ipv6_tcp_event_source; | |
98 | ||
99 | /* dbus */ | |
100 | sd_bus *bus; | |
101 | sd_event_source *bus_retry_event_source; | |
102 | ||
103 | /* The hostname we publish on LLMNR and mDNS */ | |
104 | char *hostname; | |
105 | DnsResourceKey *host_ipv4_key; | |
106 | DnsResourceKey *host_ipv6_key; | |
107 | ||
108 | /* Watch the system hostname */ | |
109 | int hostname_fd; | |
110 | sd_event_source *hostname_event_source; | |
111 | ||
112 | /* Watch for system suspends */ | |
113 | sd_bus_slot *prepare_for_sleep_slot; | |
114 | }; | |
115 | ||
116 | /* Manager */ | |
117 | ||
118 | int manager_new(Manager **ret); | |
119 | Manager* manager_free(Manager *m); | |
120 | ||
121 | int manager_start(Manager *m); | |
122 | int manager_read_resolv_conf(Manager *m); | |
123 | int manager_write_resolv_conf(Manager *m); | |
124 | ||
125 | DnsServer *manager_set_dns_server(Manager *m, DnsServer *s); | |
126 | DnsServer *manager_find_dns_server(Manager *m, int family, const union in_addr_union *in_addr); | |
127 | DnsServer *manager_get_dns_server(Manager *m); | |
128 | void manager_next_dns_server(Manager *m); | |
129 | ||
130 | uint32_t manager_find_mtu(Manager *m); | |
131 | ||
132 | int manager_send(Manager *m, int fd, int ifindex, int family, const union in_addr_union *addr, uint16_t port, DnsPacket *p); | |
133 | int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret); | |
134 | ||
135 | int manager_dns_ipv4_fd(Manager *m); | |
136 | int manager_dns_ipv6_fd(Manager *m); | |
137 | int manager_llmnr_ipv4_udp_fd(Manager *m); | |
138 | int manager_llmnr_ipv6_udp_fd(Manager *m); | |
139 | int manager_llmnr_ipv4_tcp_fd(Manager *m); | |
140 | int manager_llmnr_ipv6_tcp_fd(Manager *m); | |
141 | ||
142 | int manager_ifindex_is_loopback(Manager *m, int ifindex); | |
143 | int manager_find_ifindex(Manager *m, int family, const union in_addr_union *in_addr); | |
144 | LinkAddress* manager_find_link_address(Manager *m, int family, const union in_addr_union *in_addr); | |
145 | ||
146 | void manager_refresh_rrs(Manager *m); | |
147 | int manager_next_hostname(Manager *m); | |
148 | ||
149 | bool manager_our_packet(Manager *m, DnsPacket *p); | |
150 | DnsScope* manager_find_scope(Manager *m, DnsPacket *p); | |
151 | ||
152 | void manager_verify_all(Manager *m); | |
153 | ||
154 | DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free); | |
155 | ||
156 | #define EXTRA_CMSG_SPACE 1024 | |
157 | ||
158 | const char* support_to_string(Support p) _const_; | |
159 | int support_from_string(const char *s) _pure_; |