/* SPDX-License-Identifier: LGPL-2.1-or-later */

#pragma once

#include <sys/stat.h>

#include "common-signal.h"

#include "list.h"

#include "resolve-util.h"

#include "resolved-dns-browse-services.h"

#include "resolved-dns-dnssec.h"

#include "resolved-dns-stream.h"

#include "resolved-dns-stub.h"

#include "resolved-dns-trust-anchor.h"

#include "resolved-etc-hosts.h"

#include "resolved-forward.h"

#define MANAGER_SEARCH_DOMAINS_MAX 1024

#define MANAGER_DNS_SERVERS_MAX 256

typedef 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;

        Hashmap *delegates; /* id string → DnsDelegate objects */

        /* 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_registered_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;

        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;

        /* Data from {/etc,/run,/usr/local/lib,/usr/lib}/systemd/resolve/static.d/ */

        Hashmap *static_records;

        usec_t static_records_last;

        Set *static_records_stat;

        bool read_static_records;

        /* List of refused DNS Record Types */

        Set *refuse_record_types;

        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;

        sd_varlink_server *varlink_server;

        sd_varlink_server *varlink_monitor_server;

        Set *varlink_query_results_subscription;

        Set *varlink_dns_configuration_subscription;

        sd_json_variant *dns_configuration_json;

        sd_netlink_slot *netlink_new_route_slot;

        sd_netlink_slot *netlink_del_route_slot;

        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;

        /* Map varlink links to DnsServiceBrowser instances. */

        Hashmap *dns_service_browsers;

        Hashmap *hooks;

        struct stat hook_stat;

} Manager;

/* 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, DnsQuery *q);

int sendmsg_loop(int fd, struct msghdr *mh, int flags);

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_from_protocol(Manager *m, int ifindex, DnsProtocol protocol, int family);

static inline DnsScope* manager_find_scope(Manager *m, DnsPacket *p) {

        assert(m);

        assert(p);

        return manager_find_scope_from_protocol(m, p->ifindex, p->protocol, p->family);

}

Unexecuted instantiation: resolved-bus.c:manager_find_scope

Unexecuted instantiation: resolved-conf.c:manager_find_scope

Unexecuted instantiation: resolved-dns-browse-services.c:manager_find_scope

Unexecuted instantiation: resolved-dns-delegate.c:manager_find_scope

Unexecuted instantiation: resolved-dns-delegate-bus.c:manager_find_scope

Unexecuted instantiation: resolved-dns-query.c:manager_find_scope

Unexecuted instantiation: resolved-dns-scope.c:manager_find_scope

Unexecuted instantiation: resolved-dns-search-domain.c:manager_find_scope

Unexecuted instantiation: resolved-dns-server.c:manager_find_scope

Unexecuted instantiation: resolved-dns-stream.c:manager_find_scope

Unexecuted instantiation: resolved-dns-stub.c:manager_find_scope

Unexecuted instantiation: resolved-dns-synthesize.c:manager_find_scope

Unexecuted instantiation: resolved-dns-transaction.c:manager_find_scope

Unexecuted instantiation: resolved-dns-zone.c:manager_find_scope

Unexecuted instantiation: resolved-dnssd-bus.c:manager_find_scope

Unexecuted instantiation: resolved-dnssd.c:manager_find_scope

Unexecuted instantiation: resolved-etc-hosts.c:manager_find_scope

Unexecuted instantiation: resolved-hook.c:manager_find_scope

Unexecuted instantiation: resolved-link-bus.c:manager_find_scope

Unexecuted instantiation: resolved-link.c:manager_find_scope

Unexecuted instantiation: resolved-llmnr.c:manager_find_scope

Unexecuted instantiation: resolved-manager.c:manager_find_scope

Unexecuted instantiation: resolved-mdns.c:manager_find_scope

Unexecuted instantiation: resolved-resolv-conf.c:manager_find_scope

Unexecuted instantiation: resolved-socket-graveyard.c:manager_find_scope

Unexecuted instantiation: resolved-static-records.c:manager_find_scope

Unexecuted instantiation: resolved-varlink.c:manager_find_scope

Unexecuted instantiation: resolved-gperf.c:manager_find_scope

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, sd_json_variant **ret);

void dns_manager_reset_statistics(Manager *m);

int manager_dump_dns_configuration_json(Manager *m, sd_json_variant **ret);

int manager_send_dns_configuration_changed(Manager *m, Link *l, bool reset);

int manager_start_dns_configuration_monitor(Manager *m);

void manager_stop_dns_configuration_monitor(Manager *m);