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/* SPDX-License-Identifier: LGPL-2.1+ */
#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-conf.h"
#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;
bool enable_cache;
DnsStubListenerMode dns_stub_listener_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 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 *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;
/* Watch for system suspends */
sd_bus_slot *prepare_for_sleep_slot;
sd_event_source *sigusr1_event_source;
sd_event_source *sigusr2_event_source;
sd_event_source *sigrtmin1_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;
/* Local DNS stub on 127.0.0.53:53 */
int dns_stub_udp_fd;
int dns_stub_tcp_fd;
sd_event_source *dns_stub_udp_event_source;
sd_event_source *dns_stub_tcp_event_source;
};
/* 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 *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_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, int filter_route);
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);
void manager_reset_server_features(Manager *m);
void manager_cleanup_saved_user(Manager *m);
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