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-rw-r--r--src/resolve/resolved-manager.h217
1 files changed, 217 insertions, 0 deletions
diff --git a/src/resolve/resolved-manager.h b/src/resolve/resolved-manager.h
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+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <sys/stat.h>
+
+#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"
+#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;
+
+#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_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;
+};
+
+/* 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);