static void
xfrd_notify_send_udp(struct notify_zone_t* zone, buffer_type* packet)
{
int fd;
if(zone->notify_send_enable) {
notify_send_disable(zone);
}
/* Set timeout for next reply */
zone->notify_timeout.tv_sec = XFRD_NOTIFY_RETRY_TIMOUT;
/* send NOTIFY to secondary. */
xfrd_setup_packet(packet, TYPE_SOA, CLASS_IN, zone->apex,
qid_generate());
zone->notify_query_id = ID(packet);
OPCODE_SET(packet, OPCODE_NOTIFY);
AA_SET(packet);
if(zone->current_soa->serial != 0) {
/* add current SOA to answer section */
ANCOUNT_SET(packet, 1);
xfrd_write_soa_buffer(packet, zone->apex, zone->current_soa);
}
if(zone->notify_current->key_options) {
xfrd_tsig_sign_request(packet, &zone->notify_tsig, zone->notify_current);
}
buffer_flip(packet);
fd = xfrd_send_udp(zone->notify_current, packet,
zone->options->pattern->outgoing_interface);
if(fd == -1) {
log_msg(LOG_ERR, "xfrd: zone %s: could not send notify #%d to %s",
zone->apex_str, zone->notify_retry,
zone->notify_current->ip_address_spec);
event_set(&zone->notify_send_handler, -1, EV_TIMEOUT,
xfrd_handle_notify_send, zone);
if(event_base_set(xfrd->event_base, &zone->notify_send_handler) != 0)
log_msg(LOG_ERR, "notify_send: event_base_set failed");
if(evtimer_add(&zone->notify_send_handler, &zone->notify_timeout) != 0)
log_msg(LOG_ERR, "notify_send: evtimer_add failed");
zone->notify_send_enable = 1;
return;
}
event_set(&zone->notify_send_handler, fd, EV_READ | EV_TIMEOUT,
xfrd_handle_notify_send, zone);
if(event_base_set(xfrd->event_base, &zone->notify_send_handler) != 0)
log_msg(LOG_ERR, "notify_send: event_base_set failed");
if(event_add(&zone->notify_send_handler, &zone->notify_timeout) != 0)
log_msg(LOG_ERR, "notify_send: evtimer_add failed");
zone->notify_send_enable = 1;
DEBUG(DEBUG_XFRD,1, (LOG_INFO, "xfrd: zone %s: sent notify #%d to %s",
zone->apex_str, zone->notify_retry,
zone->notify_current->ip_address_spec));
}
static int
xfrd_send_ixfr_request_udp(xfrd_zone_t* zone)
{
int fd;
/* make sure we have a master to query the ixfr request to */
assert(zone->master);
if(zone->tcp_conn != -1) {
/* tcp is using the zone_handler.fd */
log_msg(LOG_ERR, "xfrd: %s tried to send udp whilst tcp engaged",
zone->apex_str);
return -1;
}
xfrd_setup_packet(xfrd->packet, TYPE_IXFR, CLASS_IN, zone->apex);
zone->query_id = ID(xfrd->packet);
zone->msg_seq_nr = 0;
zone->msg_rr_count = 0;
DEBUG(DEBUG_XFRD,1, (LOG_INFO, "sent query with ID %d", zone->query_id));
NSCOUNT_SET(xfrd->packet, 1);
xfrd_write_soa_buffer(xfrd->packet, zone->apex, &zone->soa_disk);
/* if we have tsig keys, sign the ixfr query */
if(zone->master->key_options && zone->master->key_options->tsig_key) {
xfrd_tsig_sign_request(xfrd->packet, &zone->tsig, zone->master);
}
buffer_flip(xfrd->packet);
xfrd_set_timer(zone, xfrd_time() + XFRD_UDP_TIMEOUT);
if((fd = xfrd_send_udp(zone->master, xfrd->packet,
zone->zone_options->outgoing_interface)) == -1)
return -1;
DEBUG(DEBUG_XFRD,1, (LOG_INFO,
"xfrd sent udp request for ixfr=%u for zone %s to %s",
ntohl(zone->soa_disk.serial),
zone->apex_str, zone->master->ip_address_spec));
return fd;
}