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Diffstat (limited to 'src/grp-resolve/systemd-resolved/resolved-manager.h')
| -rw-r--r-- | src/grp-resolve/systemd-resolved/resolved-manager.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/grp-resolve/systemd-resolved/resolved-manager.h b/src/grp-resolve/systemd-resolved/resolved-manager.h new file mode 100644 index 0000000000..2e187efeb5 --- /dev/null +++ b/src/grp-resolve/systemd-resolved/resolved-manager.h @@ -0,0 +1,183 @@ +#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 <systemd/sd-event.h> + +#include "systemd-basic/hashmap.h" +#include "systemd-basic/list.h" +#include "systemd-basic/ordered-set.h" +#include "systemd-shared/resolve-util.h" +#include "systemd-staging/sd-netlink.h" +#include "systemd-staging/sd-network.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; + bool enable_cache; + + /* 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 *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; + + /* 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_cleanup_saved_user(Manager *m); |