652ba568c6
We use stream objects in four different cases: let's track them. This in particular allows us to make sure the limit on outgoing streams cannot be exhausted by having incoming streams as this means we can neatly separate the counters for all four types.
185 lines
5.1 KiB
C
185 lines
5.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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#include "sd-event.h"
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#include "sd-netlink.h"
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#include "sd-network.h"
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#include "hashmap.h"
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#include "list.h"
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#include "ordered-set.h"
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#include "resolve-util.h"
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typedef struct Manager Manager;
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#include "resolved-conf.h"
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#include "resolved-dns-query.h"
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#include "resolved-dns-search-domain.h"
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#include "resolved-dns-server.h"
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#include "resolved-dns-stream.h"
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#include "resolved-dns-trust-anchor.h"
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#include "resolved-link.h"
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#define MANAGER_SEARCH_DOMAINS_MAX 256
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#define MANAGER_DNS_SERVERS_MAX 256
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typedef struct EtcHosts {
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Hashmap *by_address;
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Hashmap *by_name;
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Set *no_address;
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} EtcHosts;
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struct Manager {
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sd_event *event;
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ResolveSupport llmnr_support;
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ResolveSupport mdns_support;
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DnssecMode dnssec_mode;
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DnsOverTlsMode dns_over_tls_mode;
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bool enable_cache;
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DnsStubListenerMode dns_stub_listener_mode;
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/* Network */
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Hashmap *links;
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sd_netlink *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[_DNS_STREAM_TYPE_MAX];
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/* Unicast dns */
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LIST_HEAD(DnsServer, dns_servers);
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LIST_HEAD(DnsServer, fallback_dns_servers);
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unsigned n_dns_servers; /* counts both main and fallback */
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DnsServer *current_dns_server;
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LIST_HEAD(DnsSearchDomain, search_domains);
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unsigned n_search_domains;
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bool need_builtin_fallbacks:1;
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bool read_resolv_conf:1;
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usec_t resolv_conf_mtime;
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DnsTrustAnchor trust_anchor;
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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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/* mDNS */
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int mdns_ipv4_fd;
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int mdns_ipv6_fd;
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/* DNS-SD */
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Hashmap *dnssd_services;
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sd_event_source *mdns_ipv4_event_source;
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sd_event_source *mdns_ipv6_event_source;
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/* dbus */
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sd_bus *bus;
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/* The hostname we publish on LLMNR and mDNS */
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char *full_hostname;
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char *llmnr_hostname;
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char *mdns_hostname;
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DnsResourceKey *llmnr_host_ipv4_key;
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DnsResourceKey *llmnr_host_ipv6_key;
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DnsResourceKey *mdns_host_ipv4_key;
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DnsResourceKey *mdns_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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sd_event_source *sigusr1_event_source;
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sd_event_source *sigusr2_event_source;
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sd_event_source *sigrtmin1_event_source;
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unsigned n_transactions_total;
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unsigned n_dnssec_verdict[_DNSSEC_VERDICT_MAX];
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/* Data from /etc/hosts */
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EtcHosts etc_hosts;
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usec_t etc_hosts_last, etc_hosts_mtime;
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bool read_etc_hosts;
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/* Local DNS stub on 127.0.0.53:53 */
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int dns_stub_udp_fd;
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int dns_stub_tcp_fd;
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sd_event_source *dns_stub_udp_event_source;
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sd_event_source *dns_stub_tcp_event_source;
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Hashmap *polkit_registry;
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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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uint32_t manager_find_mtu(Manager *m);
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int manager_write(Manager *m, int fd, DnsPacket *p);
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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);
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int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret);
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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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bool manager_our_packet(Manager *m, DnsPacket *p);
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DnsScope* manager_find_scope(Manager *m, DnsPacket *p);
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void manager_verify_all(Manager *m);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
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#define EXTRA_CMSG_SPACE 1024
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int manager_is_own_hostname(Manager *m, const char *name);
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int manager_compile_dns_servers(Manager *m, OrderedSet **servers);
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int manager_compile_search_domains(Manager *m, OrderedSet **domains, int filter_route);
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DnssecMode manager_get_dnssec_mode(Manager *m);
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bool manager_dnssec_supported(Manager *m);
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DnsOverTlsMode manager_get_dns_over_tls_mode(Manager *m);
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void manager_dnssec_verdict(Manager *m, DnssecVerdict verdict, const DnsResourceKey *key);
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bool manager_routable(Manager *m, int family);
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void manager_flush_caches(Manager *m);
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void manager_reset_server_features(Manager *m);
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void manager_cleanup_saved_user(Manager *m);
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bool manager_next_dnssd_names(Manager *m);
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