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/*
* xfrd-notify.h - notify sending routines.
*
* Copyright (c) 2006, NLnet Labs. All rights reserved.
*
* See LICENSE for the license.
*
*/
#ifndef XFRD_NOTIFY_H
#define XFRD_NOTIFY_H
#ifndef USE_MINI_EVENT
# ifdef HAVE_EVENT_H
# include <event.h>
# else
# include <event2/event.h>
# include "event2/event_struct.h"
# include "event2/event_compat.h"
# endif
#else
# include "mini_event.h"
#endif
#include "tsig.h"
#include "rbtree.h"
struct nsd;
struct region;
struct xfrd_zone;
struct zone_options;
struct zone;
struct xfrd_soa;
struct acl_options;
struct xfrd_state;
/**
* This struct keeps track of outbound notifies for a zone.
*/
struct notify_zone_t {
rbnode_t node;
/* name of the zone */
const dname_type* apex;
const char* apex_str;
tsig_record_type notify_tsig; /* tsig state for notify */
struct zone_options* options;
struct xfrd_soa *current_soa; /* current SOA in NSD */
/* notify sending handler */
/* Not saved on disk (i.e. kill of daemon stops notifies) */
int notify_send_enable;
struct event notify_send_handler;
struct timeval notify_timeout;
struct acl_options* notify_current; /* current slave to notify */
uint8_t notify_restart; /* restart notify after repattern */
uint8_t notify_retry; /* how manieth retry in sending to current */
uint16_t notify_query_id;
/* is this notify waiting for a socket? */
uint8_t is_waiting;
/* the double linked waiting list for the udp sockets */
struct notify_zone_t* waiting_next;
struct notify_zone_t* waiting_prev;
};
/* initialise outgoing notifies */
void init_notify_send(rbtree_t* tree, region_type* region,
struct zone_options* options);
/* delete notify zone */
void xfrd_del_notify(struct xfrd_state* xfrd, const dname_type* dname);
/* send notifications to all in the notify list */
void xfrd_send_notify(rbtree_t* tree, const struct dname* apex,
struct xfrd_soa* new_soa);
/* start notifications, if not started already (does not clobber SOA) */
void xfrd_notify_start(struct notify_zone_t* zone, struct xfrd_state* xfrd);
/* handle soa update notify for a master zone. newsoa can be NULL.
Makes sure that the soa (serial) has changed. Or drops notify. */
void notify_handle_master_zone_soainfo(rbtree_t* tree,
const dname_type* apex, struct xfrd_soa* new_soa);
/* close fds in use for notification sending */
void close_notify_fds(rbtree_t* tree);
/* stop send of notify */
void notify_disable(struct notify_zone_t* zone);
#endif /* XFRD_NOTIFY_H */
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