Adding upstream version 252.22.upstream/252.22

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

1 files changed, 112 insertions, 0 deletions

diff --git a/src/resolve/resolved-dns-scope.h b/src/resolve/resolved-dns-scope.h
new file mode 100644
index 0000000..1f9d22b
--- /dev/null
+++ b/src/resolve/resolved-dns-scope.h
@@ -0,0 +1,112 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "list.h"
+#include "ratelimit.h"
+
+typedef struct DnsQueryCandidate DnsQueryCandidate;
+typedef struct DnsScope DnsScope;
+
+#include "resolved-dns-cache.h"
+#include "resolved-dns-dnssec.h"
+#include "resolved-dns-packet.h"
+#include "resolved-dns-query.h"
+#include "resolved-dns-search-domain.h"
+#include "resolved-dns-server.h"
+#include "resolved-dns-stream.h"
+#include "resolved-dns-zone.h"
+
+typedef enum DnsScopeMatch {
+        DNS_SCOPE_NO,
+        DNS_SCOPE_MAYBE,
+        DNS_SCOPE_YES_BASE, /* Add the number of matching labels to this */
+        DNS_SCOPE_YES_END = DNS_SCOPE_YES_BASE + DNS_N_LABELS_MAX,
+        _DNS_SCOPE_MATCH_MAX,
+        _DNS_SCOPE_MATCH_INVALID = -EINVAL,
+} DnsScopeMatch;
+
+struct DnsScope {
+        Manager *manager;
+
+        DnsProtocol protocol;
+        int family;
+
+        /* Copied at scope creation time from the link/manager */
+        DnssecMode dnssec_mode;
+        DnsOverTlsMode dns_over_tls_mode;
+
+        Link *link;
+
+        DnsCache cache;
+        DnsZone zone;
+
+        OrderedHashmap *conflict_queue;
+        sd_event_source *conflict_event_source;
+
+        sd_event_source *announce_event_source;
+
+        RateLimit ratelimit;
+
+        usec_t resend_timeout;
+        usec_t max_rtt;
+
+        LIST_HEAD(DnsQueryCandidate, query_candidates);
+
+        /* Note that we keep track of ongoing transactions in two ways: once in a hashmap, indexed by the rr
+         * key, and once in a linked list. We use the hashmap to quickly find transactions we can reuse for a
+         * key. But note that there might be multiple transactions for the same key (because the associated
+         * query flags might differ in incompatible ways: e.g. we may not reuse a non-validating transaction
+         * as validating. Hence we maintain a per-key list of transactions, which we iterate through to find
+         * one we can reuse with matching flags. */
+        Hashmap *transactions_by_key;
+        LIST_HEAD(DnsTransaction, transactions);
+
+        LIST_FIELDS(DnsScope, scopes);
+
+        bool announced;
+};
+
+int dns_scope_new(Manager *m, DnsScope **ret, Link *l, DnsProtocol p, int family);
+DnsScope* dns_scope_free(DnsScope *s);
+
+void dns_scope_packet_received(DnsScope *s, usec_t rtt);
+void dns_scope_packet_lost(DnsScope *s, usec_t usec);
+
+int dns_scope_emit_udp(DnsScope *s, int fd, int af, DnsPacket *p);
+int dns_scope_socket_tcp(DnsScope *s, int family, const union in_addr_union *address, DnsServer *server, uint16_t port, union sockaddr_union *ret_socket_address);
+int dns_scope_socket_udp(DnsScope *s, DnsServer *server);
+
+DnsScopeMatch dns_scope_good_domain(DnsScope *s, DnsQuery *q);
+bool dns_scope_good_key(DnsScope *s, const DnsResourceKey *key);
+
+DnsServer *dns_scope_get_dns_server(DnsScope *s);
+unsigned dns_scope_get_n_dns_servers(DnsScope *s);
+void dns_scope_next_dns_server(DnsScope *s, DnsServer *if_current);
+
+int dns_scope_llmnr_membership(DnsScope *s, bool b);
+int dns_scope_mdns_membership(DnsScope *s, bool b);
+
+int dns_scope_make_reply_packet(DnsScope *s, uint16_t id, int rcode, DnsQuestion *q, DnsAnswer *answer, DnsAnswer *soa, bool tentative, DnsPacket **ret);
+void dns_scope_process_query(DnsScope *s, DnsStream *stream, DnsPacket *p);
+
+DnsTransaction *dns_scope_find_transaction(DnsScope *scope, DnsResourceKey *key, uint64_t query_flags);
+
+int dns_scope_notify_conflict(DnsScope *scope, DnsResourceRecord *rr);
+void dns_scope_check_conflicts(DnsScope *scope, DnsPacket *p);
+
+void dns_scope_dump(DnsScope *s, FILE *f);
+
+DnsSearchDomain *dns_scope_get_search_domains(DnsScope *s);
+
+bool dns_scope_name_wants_search_domain(DnsScope *s, const char *name);
+
+bool dns_scope_network_good(DnsScope *s);
+
+int dns_scope_ifindex(DnsScope *s);
+
+int dns_scope_announce(DnsScope *scope, bool goodbye);
+
+int dns_scope_add_dnssd_services(DnsScope *scope);
+int dns_scope_remove_dnssd_services(DnsScope *scope);
+
+bool dns_scope_is_default_route(DnsScope *scope);