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resolved: implement LLMNR uniqueness verification
[thirdparty/systemd.git] / src / resolve / resolved.h
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1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
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3#pragma once
4
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5/***
6 This file is part of systemd.
7
8 Copyright 2013 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
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24#include "sd-event.h"
25#include "sd-network.h"
74b2466e 26#include "sd-rtnl.h"
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27#include "util.h"
28#include "list.h"
3b653205 29#include "in-addr-util.h"
74b2466e 30#include "hashmap.h"
091a364c 31
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32typedef struct Manager Manager;
33
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34#include "resolved-dns-query.h"
35#include "resolved-dns-server.h"
36#include "resolved-dns-scope.h"
623a4c97 37#include "resolved-dns-stream.h"
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38
39struct Manager {
40 sd_event *event;
41
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42 bool use_llmnr:1;
43
44 /* Network */
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45 Hashmap *links;
46
47 sd_rtnl *rtnl;
48 sd_event_source *rtnl_event_source;
49
091a364c 50 sd_network_monitor *network_monitor;
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51 sd_event_source *network_event_source;
52
1716f6dc 53 /* DNS query management */
ec2c5e43 54 Hashmap *dns_transactions;
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55 LIST_HEAD(DnsQuery, dns_queries);
56 unsigned n_dns_queries;
57
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58 LIST_HEAD(DnsStream, dns_streams);
59 unsigned n_dns_streams;
60
1716f6dc 61 /* Unicast dns */
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62 int dns_ipv4_fd;
63 int dns_ipv6_fd;
64
65 sd_event_source *dns_ipv4_event_source;
66 sd_event_source *dns_ipv6_event_source;
67
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68 LIST_HEAD(DnsServer, dns_servers);
69 DnsServer *current_dns_server;
70
71 LIST_HEAD(DnsScope, dns_scopes);
72 DnsScope *unicast_scope;
73
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74 /* LLMNR */
75 int llmnr_ipv4_udp_fd;
76 int llmnr_ipv6_udp_fd;
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77 int llmnr_ipv4_tcp_fd;
78 int llmnr_ipv6_tcp_fd;
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79
80 sd_event_source *llmnr_ipv4_udp_event_source;
81 sd_event_source *llmnr_ipv6_udp_event_source;
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82 sd_event_source *llmnr_ipv4_tcp_event_source;
83 sd_event_source *llmnr_ipv6_tcp_event_source;
1716f6dc 84
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85 /* dbus */
86 sd_bus *bus;
87 sd_event_source *bus_retry_event_source;
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88
89 /* The hostname we publish on LLMNR and mDNS */
90 char *hostname;
91 DnsResourceKey *host_ipv4_key;
92 DnsResourceKey *host_ipv6_key;
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93};
94
95/* Manager */
96
97int manager_new(Manager **ret);
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98Manager* manager_free(Manager *m);
99
100int manager_parse_config_file(Manager *m);
101int manager_write_resolv_conf(Manager *m);
102
623a4c97 103DnsServer* manager_find_dns_server(Manager *m, int family, const union in_addr_union *in_addr);
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104DnsServer *manager_get_dns_server(Manager *m);
105void manager_next_dns_server(Manager *m);
ec2c5e43 106
e1c95994 107uint32_t manager_find_mtu(Manager *m);
091a364c 108
623a4c97 109int manager_send(Manager *m, int fd, int ifindex, int family, const union in_addr_union *addr, uint16_t port, DnsPacket *p);
1716f6dc 110int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret);
74b2466e 111
1716f6dc 112int manager_dns_ipv4_fd(Manager *m);
74b2466e 113int manager_dns_ipv6_fd(Manager *m);
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114int manager_llmnr_ipv4_udp_fd(Manager *m);
115int manager_llmnr_ipv6_udp_fd(Manager *m);
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116int manager_llmnr_ipv4_tcp_fd(Manager *m);
117int manager_llmnr_ipv6_tcp_fd(Manager *m);
118
119int manager_ifindex_is_loopback(Manager *m, int ifindex);
120int manager_find_ifindex(Manager *m, int family, const union in_addr_union *in_addr);
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121LinkAddress* manager_find_address(Manager *m, int family, const union in_addr_union *in_addr);
122
123int manager_next_hostname(Manager *m);
74b2466e 124
ec2c5e43 125int manager_our_packet(Manager *m, DnsPacket *p);
74b2466e 126int manager_connect_bus(Manager *m);
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127
128DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
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129
130const struct ConfigPerfItem* resolved_gperf_lookup(const char *key, unsigned length);
74b2466e 131int config_parse_dnsv(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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132
133#define EXTRA_CMSG_SPACE 1024