#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 "sd-event.h" #include "sd-netlink.h" #include "sd-network.h" #include "hashmap.h" #include "list.h" #include "ordered-set.h" #include "resolve-util.h" typedef struct Manager Manager; #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; /* 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 permit_domain_search; 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; }; /* 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 *addr, uint16_t port, 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); 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);