Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 230 insertions, 0 deletions

diff --git a/src/resolve/resolved-manager.h b/src/resolve/resolved-manager.h
new file mode 100644
index 0000000..5cd5e83
--- /dev/null
+++ b/src/resolve/resolved-manager.h
@@ -0,0 +1,230 @@
+/* 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 "common-signal.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;
+        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;
+
+        /* 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_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;
+
+        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;
+
+        struct sigrtmin18_info sigrtmin18_info;
+};
+
+/* 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);
+
+int dns_manager_dump_statistics_json(Manager *m, JsonVariant **ret);
+
+void dns_manager_reset_statistics(Manager *m);