+static void
+parse_question(struct interface *iface, struct sockaddr *from, char *name, struct dns_question *q)
+{
+ struct sockaddr *to = NULL;
+ char *host;
+
+ /* TODO: Multicast if more than one quarter of TTL has passed */
+ if (q->class & CLASS_UNICAST) {
+ to = from;
+ if (iface->multicast)
+ iface = iface->peer;
+ }
+
+ DBG(1, "Q -> %s %s\n", dns_type_string(q->type), name);
+
+ switch (q->type) {
+ case TYPE_ANY:
+ if (!strcmp(name, mdns_hostname_local)) {
+ dns_reply_a(iface, to, announce_ttl);
+ service_reply(iface, to, NULL, announce_ttl);
+ }
+ break;
+
+ case TYPE_PTR:
+ if (!strcmp(name, C_DNS_SD)) {
+ dns_reply_a(iface, to, announce_ttl);
+ service_announce_services(iface, to, announce_ttl);
+ } else {
+ /* First dot separates instance name from the rest */
+ char *dot = strchr(name, '.');
+ /* Length of queried instance */
+ size_t len = dot ? dot - name : 0;
+
+ /* Make sure it's query for the instance name we use */
+ if (len && len == strlen(mdns_hostname) &&
+ !strncmp(name, mdns_hostname, len))
+ service_reply(iface, to, dot + 1, announce_ttl);
+ }
+ break;
+
+ case TYPE_AAAA:
+ case TYPE_A:
+ host = strstr(name, ".local");
+ if (host)
+ *host = '\0';
+ if (!strcmp(mdns_hostname, name))
+ dns_reply_a(iface, to, announce_ttl);
+ break;
+ };
+}
+