summaryrefslogtreecommitdiff
path: root/src/grp-resolve/systemd-resolved/resolved-dns-server.h
diff options
context:
space:
mode:
authorLuke Shumaker <lukeshu@sbcglobal.net>2016-07-27 17:24:48 -0400
committerLuke Shumaker <lukeshu@sbcglobal.net>2016-07-27 17:24:48 -0400
commitcce8d84b2e8a010f4b5a313e3866b0dcf2ed5854 (patch)
treeda8f7ac1275dac579531546de8e8609cf51be97d /src/grp-resolve/systemd-resolved/resolved-dns-server.h
parentef98f526dafb8206cc4fd895a691eda0ea0894ec (diff)
./move.sh
Diffstat (limited to 'src/grp-resolve/systemd-resolved/resolved-dns-server.h')
-rw-r--r--src/grp-resolve/systemd-resolved/resolved-dns-server.h143
1 files changed, 143 insertions, 0 deletions
diff --git a/src/grp-resolve/systemd-resolved/resolved-dns-server.h b/src/grp-resolve/systemd-resolved/resolved-dns-server.h
new file mode 100644
index 0000000000..9f4a69c37a
--- /dev/null
+++ b/src/grp-resolve/systemd-resolved/resolved-dns-server.h
@@ -0,0 +1,143 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "in-addr-util.h"
+
+typedef struct DnsServer DnsServer;
+
+typedef enum DnsServerType {
+ DNS_SERVER_SYSTEM,
+ 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,
+ DNS_SERVER_FEATURE_LEVEL_UDP,
+ DNS_SERVER_FEATURE_LEVEL_EDNS0,
+ DNS_SERVER_FEATURE_LEVEL_DO,
+ DNS_SERVER_FEATURE_LEVEL_LARGE,
+ _DNS_SERVER_FEATURE_LEVEL_MAX,
+ _DNS_SERVER_FEATURE_LEVEL_INVALID = -1
+} DnsServerFeatureLevel;
+
+#define DNS_SERVER_FEATURE_LEVEL_WORST 0
+#define DNS_SERVER_FEATURE_LEVEL_BEST (_DNS_SERVER_FEATURE_LEVEL_MAX - 1)
+
+const char* dns_server_feature_level_to_string(int i) _const_;
+int dns_server_feature_level_from_string(const char *s) _pure_;
+
+#include "resolved-link.h"
+#include "resolved-manager.h"
+
+struct DnsServer {
+ Manager *manager;
+
+ unsigned n_ref;
+
+ DnsServerType type;
+ Link *link;
+
+ int family;
+ union in_addr_union address;
+
+ char *server_string;
+
+ usec_t resend_timeout;
+ usec_t max_rtt;
+
+ 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;
+
+ /* 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;
+
+ /* If linked is set, then this server appears in the servers linked list */
+ bool linked:1;
+ LIST_FIELDS(DnsServer, servers);
+};
+
+int dns_server_new(
+ Manager *m,
+ DnsServer **ret,
+ DnsServerType type,
+ Link *link,
+ int family,
+ const union in_addr_union *address);
+
+DnsServer* dns_server_ref(DnsServer *s);
+DnsServer* dns_server_unref(DnsServer *s);
+
+void dns_server_unlink(DnsServer *s);
+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, DnsServerFeatureLevel level);
+void dns_server_packet_bad_opt(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);
+
+bool dns_server_dnssec_supported(DnsServer *server);
+
+void dns_server_warn_downgrade(DnsServer *server);
+
+DnsServer *dns_server_find(DnsServer *first, int family, const union in_addr_union *in_addr);
+
+void dns_server_unlink_all(DnsServer *first);
+void dns_server_unlink_marked(DnsServer *first);
+void dns_server_mark_all(DnsServer *first);
+
+DnsServer *manager_get_first_dns_server(Manager *m, DnsServerType t);
+
+DnsServer *manager_set_dns_server(Manager *m, DnsServer *s);
+DnsServer *manager_get_dns_server(Manager *m);
+void manager_next_dns_server(Manager *m);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(DnsServer*, dns_server_unref);
+
+extern const struct hash_ops dns_server_hash_ops;