1 /* 2 * xfrd-notify.h - notify sending routines. 3 * 4 * Copyright (c) 2006, NLnet Labs. All rights reserved. 5 * 6 * See LICENSE for the license. 7 * 8 */ 9 10 #ifndef XFRD_NOTIFY_H 11 #define XFRD_NOTIFY_H 12 13 #ifndef USE_MINI_EVENT 14 # ifdef HAVE_EVENT_H 15 # include <event.h> 16 # else 17 # include <event2/event.h> 18 # include "event2/event_struct.h" 19 # include "event2/event_compat.h" 20 # endif 21 #else 22 # include "mini_event.h" 23 #endif 24 #include "tsig.h" 25 #include "rbtree.h" 26 27 struct nsd; 28 struct region; 29 struct xfrd_zone; 30 struct zone_options; 31 struct zone; 32 struct xfrd_soa; 33 struct acl_options; 34 struct xfrd_state; 35 36 /** 37 * This struct keeps track of outbound notifies for a zone. 38 */ 39 struct notify_zone_t { 40 rbnode_t node; 41 /* name of the zone */ 42 const dname_type* apex; 43 const char* apex_str; 44 45 tsig_record_type notify_tsig; /* tsig state for notify */ 46 struct zone_options* options; 47 struct xfrd_soa *current_soa; /* current SOA in NSD */ 48 49 /* notify sending handler */ 50 /* Not saved on disk (i.e. kill of daemon stops notifies) */ 51 int notify_send_enable; 52 struct event notify_send_handler; 53 struct timeval notify_timeout; 54 struct acl_options* notify_current; /* current slave to notify */ 55 uint8_t notify_restart; /* restart notify after repattern */ 56 uint8_t notify_retry; /* how manieth retry in sending to current */ 57 uint16_t notify_query_id; 58 59 /* is this notify waiting for a socket? */ 60 uint8_t is_waiting; 61 /* the double linked waiting list for the udp sockets */ 62 struct notify_zone_t* waiting_next; 63 struct notify_zone_t* waiting_prev; 64 }; 65 66 /* initialise outgoing notifies */ 67 void init_notify_send(rbtree_t* tree, region_type* region, 68 struct zone_options* options); 69 /* delete notify zone */ 70 void xfrd_del_notify(struct xfrd_state* xfrd, const dname_type* dname); 71 72 /* send notifications to all in the notify list */ 73 void xfrd_send_notify(rbtree_t* tree, const struct dname* apex, 74 struct xfrd_soa* new_soa); 75 /* start notifications, if not started already (does not clobber SOA) */ 76 void xfrd_notify_start(struct notify_zone_t* zone); 77 78 /* handle soa update notify for a master zone. newsoa can be NULL. 79 Makes sure that the soa (serial) has changed. Or drops notify. */ 80 void notify_handle_master_zone_soainfo(rbtree_t* tree, 81 const dname_type* apex, struct xfrd_soa* new_soa); 82 83 /* close fds in use for notification sending */ 84 void close_notify_fds(rbtree_t* tree); 85 /* stop send of notify */ 86 void notify_disable(struct notify_zone_t* zone); 87 88 #endif /* XFRD_NOTIFY_H */ 89