resolved: automatically forget all learnt DNS server information when the network...

[thirdparty/systemd.git] / src / resolve / resolved-dns-server.h

diff --git a/src/resolve/resolved-dns-server.h b/src/resolve/resolved-dns-server.h
index 323f702903dced8243ccfff6a665b5b90cee5c6b..a5a82f7b7605d1cacf9e2c9eacca07501bf8f863 100644 (file)
--- a/src/resolve/resolved-dns-server.h
+++ b/src/resolve/resolved-dns-server.h
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
 #pragma once
 
 /***
@@ -30,6 +28,10 @@ typedef enum DnsServerType {
         DNS_SERVER_FALLBACK,
         DNS_SERVER_LINK,
 } DnsServerType;
+#define _DNS_SERVER_TYPE_MAX (DNS_SERVER_LINK + 1)
+
+const char* dns_server_type_to_string(DnsServerType i) _const_;
+DnsServerType dns_server_type_from_string(const char *s) _pure_;
 
 typedef enum DnsServerFeatureLevel {
         DNS_SERVER_FEATURE_LEVEL_TCP,
@@ -60,6 +62,7 @@ struct DnsServer {
 
         int family;
         union in_addr_union address;
+        int ifindex; /* for IPv6 link-local DNS servers */
 
         char *server_string;
 
@@ -68,19 +71,21 @@ struct DnsServer {
 
         DnsServerFeatureLevel verified_feature_level;
         DnsServerFeatureLevel possible_feature_level;
+
         size_t received_udp_packet_max;
+
         unsigned n_failed_udp;
         unsigned n_failed_tcp;
-        bool packet_failed:1;
+
         bool packet_truncated:1;
+        bool packet_bad_opt:1;
+        bool packet_rrsig_missing:1;
+
         usec_t verified_usec;
         usec_t features_grace_period_usec;
 
-        /* Indicates whether responses are augmented with RRSIG by
-         * server or not. Note that this is orthogonal to the feature
-         * level stuff, as it's only information describing responses,
-         * and has no effect on how the questions are asked. */
-        bool rrsig_missing:1;
+        /* Whether we already warned about downgrading to non-DNSSEC mode for this server */
+        bool warned_downgrade:1;
 
         /* Used when GC'ing old DNS servers when configuration changes. */
         bool marked:1;
@@ -96,7 +101,8 @@ int dns_server_new(
                 DnsServerType type,
                 Link *link,
                 int family,
-                const union in_addr_union *address);
+                const union in_addr_union *address,
+                int ifindex);
 
 DnsServer* dns_server_ref(DnsServer *s);
 DnsServer* dns_server_unref(DnsServer *s);
@@ -106,19 +112,25 @@ void dns_server_move_back_and_unmark(DnsServer *s);
 
 void dns_server_packet_received(DnsServer *s, int protocol, DnsServerFeatureLevel level, usec_t rtt, size_t size);
 void dns_server_packet_lost(DnsServer *s, int protocol, DnsServerFeatureLevel level, usec_t usec);
-void dns_server_packet_failed(DnsServer *s, DnsServerFeatureLevel level);
 void dns_server_packet_truncated(DnsServer *s, DnsServerFeatureLevel level);
-void dns_server_packet_rrsig_missing(DnsServer *s);
+void dns_server_packet_rrsig_missing(DnsServer *s, DnsServerFeatureLevel level);
+void dns_server_packet_bad_opt(DnsServer *s, DnsServerFeatureLevel level);
+void dns_server_packet_rcode_downgrade(DnsServer *s, DnsServerFeatureLevel level);
 
 DnsServerFeatureLevel dns_server_possible_feature_level(DnsServer *s);
 
 int dns_server_adjust_opt(DnsServer *server, DnsPacket *packet, DnsServerFeatureLevel level);
 
 const char *dns_server_string(DnsServer *server);
+int dns_server_ifindex(const DnsServer *s);
 
 bool dns_server_dnssec_supported(DnsServer *server);
 
-DnsServer *dns_server_find(DnsServer *first, int family, const union in_addr_union *in_addr);
+void dns_server_warn_downgrade(DnsServer *server);
+
+bool dns_server_limited_domains(DnsServer *server);
+
+DnsServer *dns_server_find(DnsServer *first, int family, const union in_addr_union *in_addr, int ifindex);
 
 void dns_server_unlink_all(DnsServer *first);
 void dns_server_unlink_marked(DnsServer *first);
@@ -130,6 +142,15 @@ DnsServer *manager_set_dns_server(Manager *m, DnsServer *s);
 DnsServer *manager_get_dns_server(Manager *m);
 void manager_next_dns_server(Manager *m);
 
+bool dns_server_address_valid(int family, const union in_addr_union *sa);
+
+DnssecMode dns_server_get_dnssec_mode(DnsServer *s);
+
 DEFINE_TRIVIAL_CLEANUP_FUNC(DnsServer*, dns_server_unref);
 
 extern const struct hash_ops dns_server_hash_ops;
+
+void dns_server_flush_cache(DnsServer *s);
+
+void dns_server_reset_features(DnsServer *s);
+void dns_server_reset_features_all(DnsServer *s);