1/*
2 * Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2000, 2001  Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
16 */
17
18/* $Id: lwresd.h,v 1.19 2007/06/19 23:46:59 tbox Exp $ */
19
20#ifndef NAMED_LWRESD_H
21#define NAMED_LWRESD_H 1
22
23/*! \file */
24
25#include <isc/types.h>
26#include <isc/sockaddr.h>
27
28#include <isccfg/cfg.h>
29
30#include <dns/types.h>
31
32struct ns_lwresd {
33	unsigned int magic;
34
35	isc_mutex_t lock;
36	dns_view_t *view;
37	ns_lwsearchlist_t *search;
38	unsigned int ndots;
39	isc_mem_t *mctx;
40	isc_boolean_t shutting_down;
41	unsigned int refs;
42};
43
44struct ns_lwreslistener {
45	unsigned int magic;
46
47	isc_mutex_t lock;
48	isc_mem_t *mctx;
49	isc_sockaddr_t address;
50	ns_lwresd_t *manager;
51	isc_socket_t *sock;
52	unsigned int refs;
53	ISC_LIST(ns_lwdclientmgr_t) cmgrs;
54	ISC_LINK(ns_lwreslistener_t) link;
55};
56
57/*%
58 * Configure lwresd.
59 */
60isc_result_t
61ns_lwresd_configure(isc_mem_t *mctx, const cfg_obj_t *config);
62
63isc_result_t
64ns_lwresd_parseeresolvconf(isc_mem_t *mctx, cfg_parser_t *pctx,
65			   cfg_obj_t **configp);
66
67/*%
68 * Trigger shutdown.
69 */
70void
71ns_lwresd_shutdown(void);
72
73/*
74 * Manager functions
75 */
76/*% create manager */
77isc_result_t
78ns_lwdmanager_create(isc_mem_t *mctx, const cfg_obj_t *lwres,
79		      ns_lwresd_t **lwresdp);
80
81/*% attach to manager */
82void
83ns_lwdmanager_attach(ns_lwresd_t *source, ns_lwresd_t **targetp);
84
85/*% detach from manager */
86void
87ns_lwdmanager_detach(ns_lwresd_t **lwresdp);
88
89/*
90 * Listener functions
91 */
92/*% attach to listener */
93void
94ns_lwreslistener_attach(ns_lwreslistener_t *source,
95			ns_lwreslistener_t **targetp);
96
97/*% detach from lister */
98void
99ns_lwreslistener_detach(ns_lwreslistener_t **listenerp);
100
101/*% link client manager */
102void
103ns_lwreslistener_unlinkcm(ns_lwreslistener_t *listener, ns_lwdclientmgr_t *cm);
104
105/*% unlink client manager */
106void
107ns_lwreslistener_linkcm(ns_lwreslistener_t *listener, ns_lwdclientmgr_t *cm);
108
109
110
111
112/*
113 * INTERNAL FUNCTIONS.
114 */
115void *
116ns__lwresd_memalloc(void *arg, size_t size);
117
118void
119ns__lwresd_memfree(void *arg, void *mem, size_t size);
120
121#endif /* NAMED_LWRESD_H */
122