4 static void elapse(AvahiTimeEvent *e, void *userdata) {
5 AvahiSubscription *s = userdata;
11 avahi_server_post_query(s->server, s->interface, s->protocol, s->key);
13 if (s->n_query++ <= 8)
16 g_message("%i. Continuous querying for %s", s->n_query, t = avahi_key_to_string(s->key));
19 avahi_elapse_time(&tv, s->sec_delay*1000, 0);
20 avahi_time_event_queue_update(s->server->time_event_queue, s->time_event, &tv);
24 AvahiSubscription *subscription;
25 AvahiInterface *interface;
28 static gpointer scan_cache_callback(AvahiCache *c, AvahiKey *pattern, AvahiCacheEntry *e, gpointer userdata) {
29 struct cbdata *cbdata = userdata;
36 cbdata->subscription->callback(
39 cbdata->interface->hardware->index,
40 cbdata->interface->protocol,
41 AVAHI_SUBSCRIPTION_NEW,
42 cbdata->subscription->userdata);
47 static void scan_interface_callback(AvahiInterfaceMonitor *m, AvahiInterface *i, gpointer userdata) {
48 AvahiSubscription *s = userdata;
49 struct cbdata cbdata = { s, i };
55 avahi_cache_walk(i->cache, s->key, scan_cache_callback, &cbdata);
58 AvahiSubscription *avahi_subscription_new(AvahiServer *server, AvahiKey *key, gint interface, guchar protocol, AvahiSubscriptionCallback callback, gpointer userdata) {
59 AvahiSubscription *s, *t;
66 g_assert(!avahi_key_is_pattern(key));
68 s = g_new(AvahiSubscription, 1);
70 s->key = avahi_key_ref(key);
71 s->interface = interface;
72 s->protocol = protocol;
73 s->callback = callback;
74 s->userdata = userdata;
78 avahi_server_post_query(s->server, s->interface, s->protocol, s->key);
80 avahi_elapse_time(&tv, s->sec_delay*1000, 0);
81 s->time_event = avahi_time_event_queue_add(server->time_event_queue, &tv, elapse, s);
83 AVAHI_LLIST_PREPEND(AvahiSubscription, subscriptions, server->subscriptions, s);
85 /* Add the new entry to the subscription hash table */
86 t = g_hash_table_lookup(server->subscription_hashtable, key);
87 AVAHI_LLIST_PREPEND(AvahiSubscription, by_key, t, s);
88 g_hash_table_replace(server->subscription_hashtable, key, t);
91 avahi_interface_monitor_walk(s->server->monitor, s->interface, s->protocol, scan_interface_callback, s);
96 void avahi_subscription_free(AvahiSubscription *s) {
101 AVAHI_LLIST_REMOVE(AvahiSubscription, subscriptions, s->server->subscriptions, s);
103 t = g_hash_table_lookup(s->server->subscription_hashtable, s->key);
104 AVAHI_LLIST_REMOVE(AvahiSubscription, by_key, t, s);
106 g_hash_table_replace(s->server->subscription_hashtable, t->key, t);
108 g_hash_table_remove(s->server->subscription_hashtable, s->key);
110 avahi_time_event_queue_remove(s->server->time_event_queue, s->time_event);
111 avahi_key_unref(s->key);
117 void avahi_subscription_notify(AvahiServer *server, AvahiInterface *i, AvahiRecord *record, AvahiSubscriptionEvent event) {
118 AvahiSubscription *s;
124 for (s = g_hash_table_lookup(server->subscription_hashtable, record->key); s; s = s->by_key_next)
125 if (avahi_interface_match(i, s->interface, s->protocol))
126 s->callback(s, record, i->hardware->index, i->protocol, event, s->userdata);
129 gboolean avahi_is_subscribed(AvahiServer *server, AvahiKey *k) {
133 return !!g_hash_table_lookup(server->subscription_hashtable, k);