edc501d467
This allows us to run resolved inside an nspawn container that shares the network namespace with the host, if there's already an instance running.
153 lines
4.4 KiB
C
153 lines
4.4 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "sd-event.h"
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#include "sd-network.h"
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#include "sd-rtnl.h"
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#include "util.h"
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#include "list.h"
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#include "in-addr-util.h"
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#include "hashmap.h"
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typedef struct Manager Manager;
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#include "resolved-dns-query.h"
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#include "resolved-dns-server.h"
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#include "resolved-dns-scope.h"
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#include "resolved-dns-stream.h"
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#include "resolved-link.h"
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typedef enum Support {
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SUPPORT_NO,
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SUPPORT_YES,
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SUPPORT_RESOLVE,
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_SUPPORT_MAX,
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_SUPPORT_INVALID = -1
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} Support;
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struct Manager {
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sd_event *event;
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Support llmnr_support;
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/* Network */
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Hashmap *links;
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sd_rtnl *rtnl;
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sd_event_source *rtnl_event_source;
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sd_network_monitor *network_monitor;
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sd_event_source *network_event_source;
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/* DNS query management */
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Hashmap *dns_transactions;
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LIST_HEAD(DnsQuery, dns_queries);
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unsigned n_dns_queries;
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LIST_HEAD(DnsStream, dns_streams);
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unsigned n_dns_streams;
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/* Unicast dns */
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int dns_ipv4_fd;
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int dns_ipv6_fd;
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sd_event_source *dns_ipv4_event_source;
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sd_event_source *dns_ipv6_event_source;
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LIST_HEAD(DnsServer, dns_servers);
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LIST_HEAD(DnsServer, fallback_dns_servers);
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DnsServer *current_dns_server;
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bool read_resolv_conf;
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usec_t resolv_conf_mtime;
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LIST_HEAD(DnsScope, dns_scopes);
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DnsScope *unicast_scope;
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/* LLMNR */
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int llmnr_ipv4_udp_fd;
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int llmnr_ipv6_udp_fd;
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int llmnr_ipv4_tcp_fd;
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int llmnr_ipv6_tcp_fd;
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sd_event_source *llmnr_ipv4_udp_event_source;
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sd_event_source *llmnr_ipv6_udp_event_source;
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sd_event_source *llmnr_ipv4_tcp_event_source;
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sd_event_source *llmnr_ipv6_tcp_event_source;
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/* dbus */
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sd_bus *bus;
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sd_event_source *bus_retry_event_source;
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/* The hostname we publish on LLMNR and mDNS */
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char *hostname;
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DnsResourceKey *host_ipv4_key;
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DnsResourceKey *host_ipv6_key;
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/* Watch the system hostname */
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int hostname_fd;
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sd_event_source *hostname_event_source;
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};
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/* Manager */
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int manager_new(Manager **ret);
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Manager* manager_free(Manager *m);
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int manager_start(Manager *m);
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int manager_read_resolv_conf(Manager *m);
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int manager_write_resolv_conf(Manager *m);
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DnsServer *manager_set_dns_server(Manager *m, DnsServer *s);
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DnsServer *manager_find_dns_server(Manager *m, int family, const union in_addr_union *in_addr);
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DnsServer *manager_get_dns_server(Manager *m);
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void manager_next_dns_server(Manager *m);
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uint32_t manager_find_mtu(Manager *m);
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int manager_send(Manager *m, int fd, int ifindex, int family, const union in_addr_union *addr, uint16_t port, DnsPacket *p);
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int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret);
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int manager_dns_ipv4_fd(Manager *m);
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int manager_dns_ipv6_fd(Manager *m);
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int manager_llmnr_ipv4_udp_fd(Manager *m);
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int manager_llmnr_ipv6_udp_fd(Manager *m);
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int manager_llmnr_ipv4_tcp_fd(Manager *m);
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int manager_llmnr_ipv6_tcp_fd(Manager *m);
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int manager_ifindex_is_loopback(Manager *m, int ifindex);
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int manager_find_ifindex(Manager *m, int family, const union in_addr_union *in_addr);
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LinkAddress* manager_find_link_address(Manager *m, int family, const union in_addr_union *in_addr);
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void manager_refresh_rrs(Manager *m);
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int manager_next_hostname(Manager *m);
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int manager_our_packet(Manager *m, DnsPacket *p);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
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#define EXTRA_CMSG_SPACE 1024
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const char* support_to_string(Support p) _const_;
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int support_from_string(const char *s) _pure_;
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