src/resolve/resolved-manager.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include "sd-event.h"
   5 #include "sd-netlink.h"
   6 #include "sd-network.h"
   7
   8 #include "hashmap.h"
   9 #include "list.h"
  10 #include "ordered-set.h"
  11 #include "resolve-util.h"
  12
  13 typedef struct Manager Manager;
  14
  15 #include "resolved-conf.h"
  16 #include "resolved-dns-query.h"
  17 #include "resolved-dns-search-domain.h"
  18 #include "resolved-dns-server.h"
  19 #include "resolved-dns-stream.h"
  20 #include "resolved-dns-trust-anchor.h"
  21 #include "resolved-link.h"
  22
  23 #define MANAGER_SEARCH_DOMAINS_MAX 32
  24 #define MANAGER_DNS_SERVERS_MAX 32
  25
  26 struct Manager {
  27         sd_event *event;
  28
  29         ResolveSupport llmnr_support;
  30         ResolveSupport mdns_support;
  31         DnssecMode dnssec_mode;
  32         DnsOverTlsMode dns_over_tls_mode;
  33         bool enable_cache;
  34         DnsStubListenerMode dns_stub_listener_mode;
  35
  36         /* Network */
  37         Hashmap *links;
  38
  39         sd_netlink *rtnl;
  40         sd_event_source *rtnl_event_source;
  41
  42         sd_network_monitor *network_monitor;
  43         sd_event_source *network_event_source;
  44
  45         /* DNS query management */
  46         Hashmap *dns_transactions;
  47         LIST_HEAD(DnsQuery, dns_queries);
  48         unsigned n_dns_queries;
  49
  50         LIST_HEAD(DnsStream, dns_streams);
  51         unsigned n_dns_streams;
  52
  53         /* Unicast dns */
  54         LIST_HEAD(DnsServer, dns_servers);
  55         LIST_HEAD(DnsServer, fallback_dns_servers);
  56         unsigned n_dns_servers; /* counts both main and fallback */
  57         DnsServer *current_dns_server;
  58
  59         LIST_HEAD(DnsSearchDomain, search_domains);
  60         unsigned n_search_domains;
  61
  62         bool need_builtin_fallbacks:1;
  63
  64         bool read_resolv_conf:1;
  65         usec_t resolv_conf_mtime;
  66
  67         DnsTrustAnchor trust_anchor;
  68
  69         LIST_HEAD(DnsScope, dns_scopes);
  70         DnsScope *unicast_scope;
  71
  72         /* LLMNR */
  73         int llmnr_ipv4_udp_fd;
  74         int llmnr_ipv6_udp_fd;
  75         int llmnr_ipv4_tcp_fd;
  76         int llmnr_ipv6_tcp_fd;
  77
  78         sd_event_source *llmnr_ipv4_udp_event_source;
  79         sd_event_source *llmnr_ipv6_udp_event_source;
  80         sd_event_source *llmnr_ipv4_tcp_event_source;
  81         sd_event_source *llmnr_ipv6_tcp_event_source;
  82
  83         /* mDNS */
  84         int mdns_ipv4_fd;
  85         int mdns_ipv6_fd;
  86
  87         /* DNS-SD */
  88         Hashmap *dnssd_services;
  89
  90         sd_event_source *mdns_ipv4_event_source;
  91         sd_event_source *mdns_ipv6_event_source;
  92
  93         /* dbus */
  94         sd_bus *bus;
  95
  96         /* The hostname we publish on LLMNR and mDNS */
  97         char *full_hostname;
  98         char *llmnr_hostname;
  99         char *mdns_hostname;
 100         DnsResourceKey *llmnr_host_ipv4_key;
 101         DnsResourceKey *llmnr_host_ipv6_key;
 102         DnsResourceKey *mdns_host_ipv4_key;
 103         DnsResourceKey *mdns_host_ipv6_key;
 104
 105         /* Watch the system hostname */
 106         int hostname_fd;
 107         sd_event_source *hostname_event_source;
 108
 109         /* Watch for system suspends */
 110         sd_bus_slot *prepare_for_sleep_slot;
 111
 112         sd_event_source *sigusr1_event_source;
 113         sd_event_source *sigusr2_event_source;
 114         sd_event_source *sigrtmin1_event_source;
 115
 116         unsigned n_transactions_total;
 117         unsigned n_dnssec_verdict[_DNSSEC_VERDICT_MAX];
 118
 119         /* Data from /etc/hosts */
 120         Set* etc_hosts_by_address;
 121         Hashmap* etc_hosts_by_name;
 122         usec_t etc_hosts_last, etc_hosts_mtime;
 123
 124         /* Local DNS stub on 127.0.0.53:53 */
 125         int dns_stub_udp_fd;
 126         int dns_stub_tcp_fd;
 127
 128         sd_event_source *dns_stub_udp_event_source;
 129         sd_event_source *dns_stub_tcp_event_source;
 130
 131         Hashmap *polkit_registry;
 132 };
 133
 134 /* Manager */
 135
 136 int manager_new(Manager **ret);
 137 Manager* manager_free(Manager *m);
 138
 139 int manager_start(Manager *m);
 140
 141 uint32_t manager_find_mtu(Manager *m);
 142
 143 int manager_write(Manager *m, int fd, DnsPacket *p);
 144 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);
 145 int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret);
 146
 147 int manager_find_ifindex(Manager *m, int family, const union in_addr_union *in_addr);
 148 LinkAddress* manager_find_link_address(Manager *m, int family, const union in_addr_union *in_addr);
 149
 150 void manager_refresh_rrs(Manager *m);
 151 int manager_next_hostname(Manager *m);
 152
 153 bool manager_our_packet(Manager *m, DnsPacket *p);
 154 DnsScope* manager_find_scope(Manager *m, DnsPacket *p);
 155
 156 void manager_verify_all(Manager *m);
 157
 158 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
 159
 160 #define EXTRA_CMSG_SPACE 1024
 161
 162 int manager_is_own_hostname(Manager *m, const char *name);
 163
 164 int manager_compile_dns_servers(Manager *m, OrderedSet **servers);
 165 int manager_compile_search_domains(Manager *m, OrderedSet **domains, int filter_route);
 166
 167 DnssecMode manager_get_dnssec_mode(Manager *m);
 168 bool manager_dnssec_supported(Manager *m);
 169
 170 DnsOverTlsMode manager_get_dns_over_tls_mode(Manager *m);
 171
 172 void manager_dnssec_verdict(Manager *m, DnssecVerdict verdict, const DnsResourceKey *key);
 173
 174 bool manager_routable(Manager *m, int family);
 175
 176 void manager_flush_caches(Manager *m);
 177 void manager_reset_server_features(Manager *m);
 178
 179 void manager_cleanup_saved_user(Manager *m);
 180
 181 bool manager_next_dnssd_names(Manager *m);