7 This file is part of avahi.
9 avahi is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as
11 published by the Free Software Foundation; either version 2.1 of the
12 License, or (at your option) any later version.
14 avahi is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
17 Public License for more details.
19 You should have received a copy of the GNU Lesser General Public
20 License along with avahi; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
25 #include <avahi-common/llist.h>
26 #include <avahi-common/watch.h>
28 /** A locally registered DNS resource record */
29 typedef struct AvahiEntry AvahiEntry;
34 #include "timeeventq.h"
40 #include "wide-area.h"
41 #include "multicast-lookup.h"
43 #define AVAHI_MAX_LEGACY_UNICAST_REFLECT_SLOTS 100
45 #define AVAHI_FLAGS_VALID(flags, max) (!((flags) & ~(max)))
47 #define AVAHI_RR_HOLDOFF_MSEC 1000
48 #define AVAHI_RR_HOLDOFF_MSEC_RATE_LIMIT 60000
49 #define AVAHI_RR_RATE_LIMIT_COUNT 15
51 typedef struct AvahiLegacyUnicastReflectSlot AvahiLegacyUnicastReflectSlot;
53 struct AvahiLegacyUnicastReflectSlot {
56 uint16_t id, original_id;
60 struct timeval elapse_time;
61 AvahiTimeEvent *time_event;
66 AvahiSEntryGroup *group;
70 AvahiPublishFlags flags;
72 AvahiIfIndex interface;
73 AvahiProtocol protocol;
75 AVAHI_LLIST_FIELDS(AvahiEntry, entries);
76 AVAHI_LLIST_FIELDS(AvahiEntry, by_key);
77 AVAHI_LLIST_FIELDS(AvahiEntry, by_group);
79 AVAHI_LLIST_HEAD(AvahiAnnouncer, announcers);
82 struct AvahiSEntryGroup {
86 AvahiEntryGroupState state;
88 AvahiSEntryGroupCallback callback;
92 unsigned n_register_try;
93 struct timeval register_time;
94 AvahiTimeEvent *register_time_event;
96 struct timeval established_at;
98 AVAHI_LLIST_FIELDS(AvahiSEntryGroup, groups);
99 AVAHI_LLIST_HEAD(AvahiEntry, entries);
103 const AvahiPoll *poll_api;
105 AvahiInterfaceMonitor *monitor;
106 AvahiServerConfig config;
108 AVAHI_LLIST_HEAD(AvahiEntry, entries);
109 AvahiHashmap *entries_by_key;
111 AVAHI_LLIST_HEAD(AvahiSEntryGroup, groups);
113 AVAHI_LLIST_HEAD(AvahiSRecordBrowser, record_browsers);
114 AvahiHashmap *record_browser_hashmap;
115 AVAHI_LLIST_HEAD(AvahiSHostNameResolver, host_name_resolvers);
116 AVAHI_LLIST_HEAD(AvahiSAddressResolver, address_resolvers);
117 AVAHI_LLIST_HEAD(AvahiSDomainBrowser, domain_browsers);
118 AVAHI_LLIST_HEAD(AvahiSServiceTypeBrowser, service_type_browsers);
119 AVAHI_LLIST_HEAD(AvahiSServiceBrowser, service_browsers);
120 AVAHI_LLIST_HEAD(AvahiSServiceResolver, service_resolvers);
121 AVAHI_LLIST_HEAD(AvahiSDNSServerBrowser, dns_server_browsers);
123 int need_entry_cleanup, need_group_cleanup, need_browser_cleanup;
125 AvahiTimeEventQueue *time_event_queue;
127 char *host_name, *host_name_fqdn, *domain_name;
129 int fd_ipv4, fd_ipv6,
130 /* The following two sockets two are used for reflection only */
131 fd_legacy_unicast_ipv4, fd_legacy_unicast_ipv6;
133 AvahiWatch *watch_ipv4, *watch_ipv6,
134 *watch_legacy_unicast_ipv4, *watch_legacy_unicast_ipv6;
136 AvahiServerState state;
137 AvahiServerCallback callback;
140 AvahiSEntryGroup *hinfo_entry_group;
141 AvahiSEntryGroup *browse_domain_entry_group;
142 unsigned n_host_rr_pending;
144 /* Used for assembling responses */
145 AvahiRecordList *record_list;
147 /* Used for reflection of legacy unicast packets */
148 AvahiLegacyUnicastReflectSlot **legacy_unicast_reflect_slots;
149 uint16_t legacy_unicast_reflect_id;
151 /* The last error code */
154 /* The local service cookie */
155 uint32_t local_service_cookie;
157 AvahiMulticastLookupEngine *multicast_lookup_engine;
158 AvahiWideAreaLookupEngine *wide_area_lookup_engine;
161 void avahi_entry_free(AvahiServer*s, AvahiEntry *e);
162 void avahi_entry_group_free(AvahiServer *s, AvahiSEntryGroup *g);
164 void avahi_cleanup_dead_entries(AvahiServer *s);
166 void avahi_server_prepare_response(AvahiServer *s, AvahiInterface *i, AvahiEntry *e, int unicast_response, int auxiliary);
167 void avahi_server_prepare_matching_responses(AvahiServer *s, AvahiInterface *i, AvahiKey *k, int unicast_response);
168 void avahi_server_generate_response(AvahiServer *s, AvahiInterface *i, AvahiDnsPacket *p, const AvahiAddress *a, uint16_t port, int legacy_unicast, int is_probe);
170 void avahi_s_entry_group_change_state(AvahiSEntryGroup *g, AvahiEntryGroupState state);
172 int avahi_entry_is_commited(AvahiEntry *e);
174 void avahi_server_enumerate_aux_records(AvahiServer *s, AvahiInterface *i, AvahiRecord *r, void (*callback)(AvahiServer *s, AvahiRecord *r, int flush_cache, void* userdata), void* userdata);
176 void avahi_host_rr_entry_group_callback(AvahiServer *s, AvahiSEntryGroup *g, AvahiEntryGroupState state, void *userdata);
178 void avahi_server_decrease_host_rr_pending(AvahiServer *s);
179 void avahi_server_increase_host_rr_pending(AvahiServer *s);
181 int avahi_server_set_errno(AvahiServer *s, int error);
183 #define AVAHI_CHECK_VALIDITY_RETURN_NULL(server, expression, error) { \
184 if (!(expression)) { \
185 avahi_server_set_errno((server), (error)); \
190 #define AVAHI_CHECK_VALIDITY_SET_RET_GOTO_FAIL(server, expression, error) {\
191 if (!(expression)) { \
192 ret = avahi_server_set_errno((server), (error)); \