/* SPDX-License-Identifier: LGPL-2.1-or-later */ #pragma once #include #include "sd-event.h" #include "sd-netlink.h" #include "sd-network.h" #include "common-signal.h" #include "hashmap.h" #include "list.h" #include "ordered-set.h" #include "resolve-util.h" #include "varlink.h" typedef struct Manager Manager; #include "resolved-dns-query.h" #include "resolved-dns-search-domain.h" #include "resolved-dns-stream.h" #include "resolved-dns-stub.h" #include "resolved-dns-trust-anchor.h" #include "resolved-link.h" #include "resolved-socket-graveyard.h" #define MANAGER_SEARCH_DOMAINS_MAX 256 #define MANAGER_DNS_SERVERS_MAX 256 typedef struct EtcHosts { Hashmap *by_address; Hashmap *by_name; Set *no_address; } EtcHosts; struct Manager { sd_event *event; ResolveSupport llmnr_support; ResolveSupport mdns_support; DnssecMode dnssec_mode; DnsOverTlsMode dns_over_tls_mode; DnsCacheMode enable_cache; bool cache_from_localhost; DnsStubListenerMode dns_stub_listener_mode; usec_t stale_retention_usec; #if ENABLE_DNS_OVER_TLS DnsTlsManagerData dnstls_data; #endif /* 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; Hashmap *stub_queries_by_packet; LIST_HEAD(DnsStream, dns_streams); unsigned n_dns_streams[_DNS_STREAM_TYPE_MAX]; /* 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; bool read_resolv_conf; bool resolve_unicast_single_label; struct stat resolv_conf_stat; 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; /* DNS-SD */ Hashmap *dnssd_services; /* dbus */ sd_bus *bus; /* The hostname we publish on LLMNR and mDNS */ char *full_hostname; char *llmnr_hostname; char *mdns_hostname; DnsResourceKey *llmnr_host_ipv4_key; DnsResourceKey *llmnr_host_ipv6_key; DnsResourceKey *mdns_host_ipv4_key; DnsResourceKey *mdns_host_ipv6_key; /* Watch the system hostname */ int hostname_fd; sd_event_source *hostname_event_source; sd_event_source *sigusr1_event_source; sd_event_source *sigusr2_event_source; sd_event_source *sigrtmin1_event_source; unsigned n_transactions_total; unsigned n_timeouts_total; unsigned n_timeouts_served_stale_total; unsigned n_failure_responses_total; unsigned n_failure_responses_served_stale_total; unsigned n_dnssec_verdict[_DNSSEC_VERDICT_MAX]; /* Data from /etc/hosts */ EtcHosts etc_hosts; usec_t etc_hosts_last; struct stat etc_hosts_stat; bool read_etc_hosts; OrderedSet *dns_extra_stub_listeners; /* Local DNS stub on 127.0.0.53:53 */ sd_event_source *dns_stub_udp_event_source; sd_event_source *dns_stub_tcp_event_source; /* Local DNS proxy stub on 127.0.0.54:53 */ sd_event_source *dns_proxy_stub_udp_event_source; sd_event_source *dns_proxy_stub_tcp_event_source; Hashmap *polkit_registry; VarlinkServer *varlink_server; VarlinkServer *varlink_monitor_server; Set *varlink_subscription; sd_event_source *clock_change_event_source; LIST_HEAD(SocketGraveyard, socket_graveyard); SocketGraveyard *socket_graveyard_oldest; size_t n_socket_graveyard; struct sigrtmin18_info sigrtmin18_info; }; /* 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_monitor_send(Manager *m, int state, int rcode, int error, DnsQuestion *question_idna, DnsQuestion *question_utf8, DnsPacket *question_bypass, DnsQuestion *collected_questions, DnsAnswer *answer); 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_packet_from_local_address(Manager *m, DnsPacket *p); bool manager_packet_from_our_transaction(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); /* For some reason we need some extra cmsg space on some kernels/archs. One of those days we need to figure out why */ #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); DnsOverTlsMode manager_get_dns_over_tls_mode(Manager *m); void manager_dnssec_verdict(Manager *m, DnssecVerdict verdict, const DnsResourceKey *key); bool manager_routable(Manager *m); void manager_flush_caches(Manager *m, int log_level); void manager_reset_server_features(Manager *m); void manager_cleanup_saved_user(Manager *m); bool manager_next_dnssd_names(Manager *m); bool manager_server_is_stub(Manager *m, DnsServer *s); int socket_disable_pmtud(int fd, int af); int dns_manager_dump_statistics_json(Manager *m, JsonVariant **ret); void dns_manager_reset_statistics(Manager *m);